Olowalu is one of the easily accessible petroglyph sites on Maui. Access is via a quarter mile (400 m) long dirt trail. Also known as Pu'u Kilea in the Hawaiian language, the Olowalu Petroglyphs are located along a basalt cliff in West Maui. About 100 ancient images have been chiseled into the rock here by ancient Hawaiians. You'll be able to see human and animal figures, as well as sails.
The Lahaina Restoration Foundation got a lease to this site in 1964 and built a wooden stairway and viewing platform. Unfortunately the site has been vandalized in the past. Some of the rocks have graffiti on them.