The volcanic field covers a long and wide area with a surface of about . Lunar Crater volcanic field extends in north-northeast to south-southwest direction along the Reveille Range and Pancake Range and between Railroad Valley to the southeast and Hot Creek Valley/Big Sand Springs Valley/Kawich Valley in the northwest. Over 200 vents are located within the field, mostly monogenetic volcanoes with long aa (blocky lava with a jagged surface) lava flows along with a few lava domes, dykes, four maars (craters formed by gas or steam explosions), scoria cones, tuff rings and volcano clusters; cones reach heights of and widths of and often are open on one side while fissure vents are often associated with elongated ramparts. The vents reach elevations of . The Hot Creek geothermal field is within from the Lunar Crater volcanic field but does not appear to have its heat source there.