Apparently the people treated the hill on the island as a religious location making frequent pilgramages to the summit for ceremonial purposes. A small cave on the northern slope near the summit contained some pottery shards and most interestingly, cave drawings. The drawings illustrated various activities that one would expect of native peoples of the time. In one area, seemingly reserved for special drawings, was a most remarkable series of drawings. These drawings to this day are the subject of heated debate among scholars. Professor Arnold B. Vogelhund who headed up the 1954 expedition published a lengthy paper on his findings. When he presented his findings at the 1959 convention of the European Archeological Society in Stockholm a great controversy was triggered. To better understand the controversy I should describe the cave drawings that were reproduced in the text I found. Unlike typical cave drawings that are usually crude stick figures these were highly sophisticated and almost photographically accurate. That was only a small part of the controversy however. This departure from the usual style of cave drawings caused some experts to doubt their authenticity. Subsequent testing of the actual cave drawing pigments however have verified their age at 500 - 600 years old. In fact, no one has been able to prove that the drawings are anything other than authentic and dated as that age.