Last updated: September 8, 2016
National Natural Landmarks
Grants Lava Flow
Grants Lava Flow is one of the best examples of recent extrusive volcanism. Located within portions of the El Malpais National Monument and El Malpais National Conservation Area, it is about 32 miles long and 18 miles wide at its widest point. Its gigantic pressure ridges, collapse depression ponds, and lava tubes are outstanding.
Location: Valencia County, NM
Year designated: 1969
Ownership: Federal, Indian Trust (Acoma Pueblo), Private
For additional information see:
Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.