Ndakunimba Stones

From the longer Wikipedia page on 
The Ndakunimba Stones are the remains of a 50-foot-tall monolith carved with petroglyphs, located in Dakuniba (pronounced [ɛn dakunimba], town outside the pale), a remote village in Cakaudrove Province on Vanua Levu, Fiji. They comprise about 14 stone fragments of various sizes, with deeply carved angular figures.
The stones were discovered by Bruce and Sheridan Fahnestock on expeditions between 1934 and 1937 for the American Museum of Natural History. While the petroglyphs were at first thought to have been an early notational system, they have yet to be deciphered.
Category:Undeciphered inscriptions