After a bit of searching, a few things become apparent to Thunder. One, the kind of cinnabar on the island is the plant kind, sometimes called Dragon's blood, two, there were intelligent inhabitants on the island recently and they stayed for at least a few days, and three, both they and the ant-monster (should they have been different parties) have been gone for a good while.<br/><br/>There was some harvesting of the trees going on, from a few left over tools, so somebody was interrupted. Possibly fatal, but there's no evidence of that left if it was the case.<br/><br/>Also, there are some native animals on the island, although all of them seem to be in the trees.