A 1956 study concluded that the uneven lava deposits, reaching a depth over 10 m in areas, were a major factor in the preservation of Cuicuilco.

Its early lava deposits are estimated at more than 840,000 years old and are part of the Lily Formation (about 2.9 million to 840,000 years ago).

Radially spreading lava flows which have digitate and broad sheet-like forms extend from the summit, including radar-dark flows which overlay several older lava deposits.

Unlike many of the other mountains in the area, the Pinaleños have no lava deposits.

The rims of pre-existing impact craters are still visible in places, indicating that the lava deposits are 250-500 m in thickness.

There are lava deposits on the mountain which also suggest activity similar to shield eruptions.

Geologically, these hills are similar to the Deccan Plateau and are composed of basaltic lava deposits.

Unlike other lush Pacific islands, Rapa Nui is made up of rocky terrain, lava deposits and rough scrub.

The lunarscape-like summit currently stands at 3,350 m (10,990 ft) above sea level, but varies according to the eruptions' destruction or lava deposits.

In 1860, the Eifel's biggest lava deposit - the Feuerberg in Hohenfels - was leased by the municipality for lava mining.