The cache is a small camouflage container located not too far off the Rocky Fork Trail. BYOP as there is only room for a logsheet.
To get to Rocky Fork Trail travel up the Fryingpan Road out of Basalt, CO nearly 13 miles and watch for the Rocky Fork turn off. There are a few primitive campsites along the trail if you want to spend the night. Ruedi Reservoir is just up Fryingpan Road with a campground and boat ramp.
A note to fishermen/women - as Stanshow notes below in one of the logs - The fish in the beaver ponds are Colorado River Cutthroat. Because they are endangered (although it didn't seem that way at these ponds) they must be returned to the water immediately. Check the sign at the trailhead for tips on identification.
You will want to plan for a several hour hike (round trip)for the average person. The trail is rocky and steep for the first .75 - 1 miles but after that is pleasantly rolling. Elevation is above 8000 feet. Lots of flowers in the spring and summer months! Bring bug spray after June - although you really only need it for a 1/2 mile through a riparian area.