Geocaching with Navicache


cache type GPS-O (Letchworth State Park) cache size

by mafg
(Finds: 2  Score: 10.5)    (Hidden: 11  Score: 62)

printer versionPrinter Version   Spy on this cache.Spy on this Cache

Coordinates (WGS-84 datum)
N 42° 35.439'   W 078° 01.600'
Castile,   New York   14427
United States    Near By Caches

Hidden On: 23 Oct 2003
Waypoint (Landmark): N00B2B
Open Cache:  Personal use only
Cache type:  Virtual
Cache size:   Virtual

Difficulty: gps gps gps (moderate)
Terrain: gps gps gps gps half gps (hard)

Misc: Drinking water available. There are restrooms (water closets) available Pets are allowed. Parking is available There may be fees.


Maps are queued for generation.
Additional maps for this cache available at: topozone.com logo    mapquest.com logo

GPS-O Anyone?
Letchworth State Park

(There is a fee to enter the park)

The "O" stands for Orienteering ----- and I hope you know what GPS stands for!

Together, the GPS and the "O" mean that you use your GPS to negotiate an orienteering course as you search for specific permanent controls (markers) based on Latitude and Longitude coordinates.

Various orienteering organizations maintain permanent orienteering courses in many cities. For example, the Rochester, NY Orienteering Club has permanent courses set up at Durand Eastman Park, Letchworth State Park, Mendon Ponds Park, and Webster Park. The courses are set up so that a person can take a topographical map, with the location of several controls indicated on the map, then go out and physically locate the controls. They then mark their course punch card (provided with the map) with the letters that are on each control. The orienteer then sends his completed course card to the club and the club issues him an award.

To complete the course, the orienteer has to be able to read a topographical map and use a compass to orient his map properly. Between the compass and the identification of landmarks on the map, he can find the location of each control. Some of the controls are easy to find (on or very near to a trail); some are of a medium difficulty (off trail but on a distinct land feature), and some are still more difficult to locate (off trail with no specific features).

This is a unique opportunity for GPS'ers to become familiar with traditional orienteering while still using their GPS! Through the cooperation of the Rochester Orienteering Club, you will be able to obtain a topographical orienteering map of the course in Letchworth State Park, Durand Eastman Park, Mendon Ponds Park, and Webster Park. These courses have had the Latitude and Longitude recorded for each of the controls. You could use any other maps you have available, but the club maps are very detailed and therefore probably more helpful. The club also has a clue sheet, for each of the points to be found, and a course punch card to document your progress.

The orienteering maps, and other course materials, are available on-line under the course link below or you can purchase the materials at The Map Shop, Northfield Common, 50 State Street, Pittsford, New York 14534, (585) 385-5850.

GPS Location of The Map Shop
N 43 05.404 -- W 077 30.614

As mentioned above, those who complete the course without a GPS are recognized by the club with an award. If you use a GPS, you are not currently eligible for an award.

So … get your GPS, a topo map, a list of clues, your course punch card, and let's do a GPS-O!

(Recorded with a GPSMAP 76S using an external antenna)
Map Datum - WGS 84
of Reading
(ddd mm.mmm)
(ddd mm.mmm)
Control #17N 42 35.593W 078 02.842
25 Feet
Control #18N 42 35.697W 078 02.236
20 Feet
Control #19N 42 35.829W 078 02.134
23 Feet
Control #20N 42 34.986W 078 03.003
30 Feet
Control #21N 42 35.150W 078 02.882
30 Feet
Control #22N 42 35.172W 078 03.275
25 Feet
Control #23N 42 35.468W 078 02.963
28 Feet
Control #24N 42 35.183W 078 02.624
45 Feet
Control #25N 42 35.403W 078 02.644
30 Feet
Control #26N 42 35.582W 078 02.981
33 Feet
Control #27N 42 35.764W 078 02.840
45 Feet
Control #28N 42 35.869W 078 01.958
32 Feet
Control #29N 42 35.584W 078 02.588
17 Feet
Control #30N 42 35.970W 078 02.025
22 Feet
Control #31N 42 35.384W 078 02.258
16 Feet
Control #32N 42 35.651W 078 02.339
18 Feet
Control #33N 42 35.583W 078 02.208
21 Feet
Control #34N 42 35.647W 078 01.973
25 Feet
Control #35N 42 35.320W 078 01.594
28 Feet
Control #36N 42 35.800W 078 01.837
30 Feet
Control #37N 42 35.608W 078 01.466
30 Feet
Control #38N 42 35.300W 078 03.127
24 Feet
Control #39N 42 34.754W 078 03.225
21 Feet
Control #40N 42 35.015W 078 03.295
20 Feet

Due to the length of this cache, you may log an entry when you have found 12 or all 24 controls. Your log entry must include the control numbers (not the letters) that you found. In order for the log to stay on the cache page, you will have to verify that you have found the controls by e-mailing me the control numbers and the corresponding letter for each control. Posts to the cache page which are not followed up with an e-mail verifying the results will have to be deleted.


I would also suggest that you take a compass with you in case you loose satellite signal.

I hope you enjoy this cache!

    Right click on the link to download the coordinates in EasyGPS/ExpertGPS format.

    You can find out about and download here.

    Click here to view the instructions, the hints, and the course punch card in PDF format.

    If you don't have a PDF viewer, you can download here.

Map Detail
    This is a USGS topo map that was generated using Topo! software. The controls are identified by a marker, but they are not numbered. This should help you to navigate around hills, lakes and other obstacles.

    Right click on the link to save the Letchworth State Park Map to your computer.

NoteAdd a Log Entry

CACHE LOGS - May contain hints(spoilers)!    decode

I found it! 31 Dec 2006 by  Szuchie  (Finds: 146  Score: 577)    (Hidden: 5  Score: 26)
    Open Log:  Personal use only

What a better way to celebrate my 666th cache find then by doing a "ghostie cache"! Hahaha. I wanted something a little fun and spooky, so why not a virtual cache – especially one that has seen far too few visitors! This truly was one of the most enriching and amazing caches Chicky and I have ever done.

It originally started on Saturday, December 30th. We were in the park on some geo-related business and decided to pick up a few of the controls since several of them were located near where we were exploring. And…well…as others have pointed out, we too ended up having so much fun that we kept doing one after another and suddenly found ourselves with 8 controls!

That night we talked about how great of a time we had...so it was decided the next day (Sunday, December 31st) we'd return and complete the GPS-O. Once again we ended up having a blast going from control to control, and quickly hit the 12th control plateau...but it was such fun we kept on cruising and ended up with a grand total of 22 controls (in the order that we located them: 25, 26, 23, 17, 29, 31, 24, 29, 21, 20, 22, 40, 38, 32, 18, 33, 34, 36, 28, 30, 19 and 37).

These controls were placed in some of the most beautiful areas in the park – many of which I had never had the fortune to explore. It was amazing how many diverse areas exist in this section of Letchworth. What was even more fun was hiking between the points, and discovering new trails and areas of forest that we had never been down before. At several points in this epic journey we were surrounded by dozens of deer – it was such a surreal experience – we truly felt as we were guests in their home. How tremendously surreal! And to truly seal this as one of our greatest caching adventures to date – we witnessed a bald eagle soaring through the gorge as we were headed to our final control. Pure unspoiled amazement…there aren’t words to express the fun and excitement we felt at each stage of this journey. This is certainly one of our all-time favorite caches…and we even have plans to return with my Dad to find the last two controls so we can say we have completed the entire course.

We would like to send our most sincere and deepest thanks to you Geo-Actuary for allowing us to take part in this wonderful experience – we’ll always look fondly upon this adventure! Also, a super-mega-huge nod to P-Man for the inspiration to finally complete this (we can't believe we waited oh-so long!)


I found it! 25 Sept 2006 by  Paleoman  (Finds: 95  Score: 428)    (Hidden: 14  Score: 60)
    Open Log:  Personal use only

I live close by and I have been wanting to try this for awhile. So today was a cool sunny day, just perfect for hiking in Letchworth park. I went to work until 10:00am and asked my boss if I could get the rest of the day off and he said "no problem have a good time". He knew what I was up to and that I had caching on my mind, so it was better to let me go instead of moping around at work all day. I arrived at Letchworth in about 15 minutes and I decided to try and get as many of these waypoints as I could. I was successful in locating 22 of the 24 waypoints. I would have got them all but I blew out my knee and could barely make it back to my truck. Man it is tough getting older! Now for the waypoints I found. I located Control #17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38. I will email you the numbers with the corresponding letters. I really enjoyed this experience and I already knew where most of these were as I do a lot of hiking in Letchworth and crosscountry skiing every winter. Thanks for the fun day. -Paleoman52-

I made it back to the Park on 9/27/06 and I was able to locate Control #39, and #40. I have now found them all. No problem today with the bad knee, it was a beautiful day for hiking. I saw lots of Deer, and the leaves are really starting to change into their Fall colors.I used my GPS for locating all these waypoints.

I found it! 01 Jan 2004 by  country boy gary  (Finds: 20  Score: 99)    (Hidden: 0  Score: 0)
    Open Log:  Personal use only

Morning Glory and I ,along with Hunter started out today(10:30) and were going to do a few of these controls but we were having so much fun doing them,that we did all 24 of them.the weather was great and it was just a great day to be on the trails and in the woods.There were alot of people in the park today and we ran into 1 other group of 3 doing the controls also.They had done 13 when we met up with them.We saw an awful lot of deer and some of them did't seem to mind us being in their territory.This was truly a great way to spend the first day of the year and all of the controls were easy to find even though most of the coord's were off as much as 75 to 100 ft. We did controls 17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40 We finished the last control at 4:00. Thanks for getting us out to enjoy the great outdoors!!

I found it! 24 Dec 2003 by  Harv and Donna  (Finds: 152  Score: 707)    (Hidden: 0  Score: 0)
    Open Log:  Personal use only

Found 16 of the 24 Controls between 10:30 and 2:30 24 Dec 03
A rainy Xmas eve day, Donna had to work, what better way to spend it but caching. I really had the park all to myself. Raining on Xmas Eve, who goes to a park on that day?
It was raining quite hard and I really just drove to Letchworth to see which part of the park the waypoints were in and maybe just find a couple to see what they were like. Fortunately I found the Portageville gate open; it’s normally closed in the winter. And the 1st point was just a ways inside the gate and really not that far from the road, found it rather quickly. Actually I never spent more than 2 or 3 minutes looking for any of the control points. Like Cracker7M I found most of the coords to be off between 50 and 125 feet. One was 10; another 13 and another 20 but those were the best. I kept track of the actual coords of where I found each control and was going to list them with the control points I found but since your not looking for something that is hidden under sticks and leaves or in a hollow tree or stump but very easily seen when just in the general area, they really aren’t needed. With the given coords getting you close and then the control clue, it didn’t take me long to spot any of them. After finding the 1st one I just kept going and eventually the rain turned to snow, so I was soaked only a little. I bushwhacked to most of them either singularly or in groups of 2 or 3 going from the 1st to the 2nd etc. I was having so much fun and just kept going and ended up with 16 found before having to leave. I must have seen over 200 deer, they were everywhere and found the remains of an 8-point buck. I really had fun doing this one and truly enjoyed tramping around the park in areas that I hadn’t been to before. Thanks for the nice cache.
The controls I found were 18, 19, 20, 21, 24, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, and 39.
Harv & Donna (without Donna) Dansville, NY

I found it! 30 Oct 2003 by  Cracker7M  (Finds: 35  Score: 168.5)    (Hidden: 5  Score: 22)
    Open Log:  Personal use only

Woohoo! An FTF for me....Havent had one in awhile...
I do have to admit that we picked easy ones, and drove between two groupings of controls.

I also unfortunately, didnt have a map with me. I wanted to attempt this with map and compass, using the GPS as backup, but my computer wouldnt cooperate with me this morning in creating the map. I should be better prepared for the rest of them when I attempt them next.

We also found the coords to generally be off between 50 and 100ft on most of the controls. The best was down around 23ft. This was using three different models of Magellans, and none of the three really agreed. The recent solar storms may have something to do with it.

Thanx for an interesting cache idea!

We did 7 controls in the order as follows:



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