There are several lava lizard species in the Galapagos Islands. Like most reptiles they bask in the sun to warm up. The dark volcanic rocks common in the Galapagos are especially favored spots to hang out to look for food, predators or other lava lizards.
"They ran and frolicked about, running in and out of the lava crevices,
with always a lookout for marauding birds."
William Beebe on lava lizards, Galapagos: World's End 1924