EL MALPAIS
GEOLOGY
NEW MEXICO U.S.A
The
One of the two Double Sinks
LAVA TUBES
1
COLLAPSE
1
REFEreNCES
USGS: Volcano Hazards Program
Valles Caldera - New Mexico
Yellowstone Observatory
Outline of the geology of the Jemez Mountains, New Mexico
New Mexico Geological Survey
Albuquerque Country, Northrop, S. A.; [ed.], New Mexico Geological Society 12th Annual Fall Field Conference Guidebook, 199 p.
R.A. Bailey, R.L. Smith & C.S, Ross, 1961, pp 139-143
https://nmgs.nmt.edu/publications/guidebooks/downloads/12/12_p0139_p0143.pdf