Tour The Valles Caldera With Geologist Patrick Rowe

Valles Caldera. Photo by Josip Loncaric

PEEC News:

The Valles Caldera is one of only three active calderas in the mainland United States, and it’s right in our backyard.

You may have explored it before, but have you ever given thought to what’s found underneath and how it was formed? In fact, hot magma is only three miles below your feet when standing in the Valle Grande. Join geologist Patrick Rowe for a fact-filled driving tour offered by PEEC 8 a.m. to 2 p.m. Saturday, May 9.

This tour will include several stops intended to educate the participants of the major geologic events that formed the Pajarito Plateau and the Valle Caldera. The group will meet at the new Los Alamos Nature Center and from there, they will make their way by caravan to explore the oldest formation of the Jemez Volcanic field, which is near the Totavi Gas Station. The tour will end with an explanation of the youngest formations found in the Valles Caldera itself.

The tour is limited to 40 participants. While it’s free to attend, registration is required. For more information and to register, visit, email or call 505.662.0460.

The Pajarito Environmental Education Center (PEEC) was founded in 2000 to serve the community of Los Alamos. It offers people of all ages a way to enrich their lives by strengthening their connections to our canyons, mesas, mountains, and skies. PEEC operates the Los Alamos Nature Center at 2600 Canyon Road, holds regular programs and events, and hosts a number of interest groups from birding to hiking to butterfly watching. PEEC activities are open to everyone; however members receive exclusive benefits such as discounts on programs and merchandise. Annual memberships start at $35. To learn more, visit

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