|   Volcanoes and Lava Flows Five major lava flows and at least eight volcanic vents created the lava landscape of El Malpais. Learn more about these volcanic features.   Lava Tube Caves Almost 300 lava tube caves dot the volcanic landscape of El Malpais. Learn more about how these features unique to lava flows form.   Tinajas During the wet months, shallow depressions in sandstone fill with water and create micro ecosystems for life. Learn more about tinajas.   Fossils Volcanic eruptions preserved the impression of trees and plants in the basaltic lava rock. Learn more about lava tree mold fossils. | 
Last updated: May 6, 2025
 
