He is known for making "first descents", including the former record 105 foot (32 M) Alexandra Falls in Canada's Northwest Territories, Guadelupe Falls in the Jemez Mountains of New Mexico, and Smith Falls in Idaho.
The Jemez Mountains are home to a federally endangered species, the Jemez Mountains salamander.
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On the east side of the Jemez Mountains, it descends even more steeply, on a series of hairpin turns offering spectacular views into Frijoles Canyon in Bandelier National Monument, to a junction with NM 501 (NM 502 in some references, but NM 501 is correct) leading east into the town of Los Alamos.