Photo: More petroglyphs in Hawaii Volcanoes National Park

These are more petroglyphs from Hawaii Volcanoes National Park, part of the Pu’u Loa group. During historic times, when a child was born, a small cupule would be engraved for the umbilical cord and covered with a stone. There are more than 20,000 of these in the grouping.

Petroglyphs umbilical dots from Hawaii Volcanoes National Park