Matterhorn is a large boulder by the river with several nice routes with decent landings.
Use the same parking as for Double Trouble Boulder. Walk down by the river.
Per Will Chang: the GPS coordinates provided for this boulder is very off. Park at a big pulloff on the right side, and walk back along the road until there is a clear trail on the left. The correct GPS location of the boulder is: 40°16'42.6"N 105°23'18.2"W.
Eds. Note, we have requested a decimal GPS coordinate location rather than degree, minute, and second, since this website uses that decimal system, in order to move the satellite pin.