This Cache is an amateur radio APRScache, along with being an EarthCache, too. For ham radio operators, the geology portion of the cache is optional. To log the APRScache, simply log the location with your APRS-enabled radio at the EarthCache GPS coordinates (Note: radio and cell service may be very challenging at this location; send a log from where you can make a contact).
Optionally, you can also log the EarthCache, which teaches more about the geology of granitic, or granitoid, rocks in the high Sierra. You will classify the rock type by name using a QAP ternary diagram. Additionally you will use a cumulative percentage graph to determine elevation characteristics of the area. Finally, you will learn a bit more about how this U-shaped valley formed.
Here are the coordinates for the EarthCache on the Geocaching.com website:
"Donnell Vista Granitoid"
| Cache name | APRScache/EarthCache: Donnell Vista Granitoid |
| Hint | Park at the GPS coordinates and log the APRScache; then walk to, and log, then EarthCache. |
| Country | United States |
| Gridsquare | DM08AI81XV |
| Latitude | 38.341191 |
| Longitude | -119.925286 |
| Difficulty | Easy |
| Terrain | Handicapped accessible |
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