The best road for viewing the unique volcanic scenery is New Mexico SR 4, connecting Los Alamos and San Ysidro. There are several scenic turnoffs as SR 4 passes through Valle Grande, part of the Valles Caldera a supervolcano and now managed by the Valles Caldera National Preserve. During the warmer months, a large elk herd inhabits Valle Grande and can often be seen from these turnoffs bring the biggest binoculars you have.
There are also nice picnic areas along SR 4, at Fenton Lake State Park on SR 126, and in Santa Clara Canyon, on the territory of Santa Clara Pueblo on the east side. A fee is charged to enter Santa Clara Canyon. Stop en route and see the archaeological sites of the Puye Cliff Dwellings as of 2008 still closed; see note. Note: signs on the route indicate that the Santa Clara points of interest are still closed as of 2006, due to the disastrous 2000 forest fire. Most of the other attractions damaged in that fire are slowly re-opening, so check back occasionally and see if these become available too.
Just before you reach Los Alamos, a turn-off to the right takes you up to the Pajarito Mountain Ski Area. The top of the ski area is on the rim of the Valles Caldera and has a great view of Valle Grande; in summer the lifts are open intermittently for hikers and mountain bikers. Overnight camping is allowed by permit at the adjacent Camp May, a Los Alamos County park.
