Human evolution
Stone artifacts have been found on Flores which can be dated to a million years ago.  These artifacts are proxies; which means there were no skeletons of humans, but only a species of Homo could have made them.  The artifacts are flakes and other implements, 48 in all, some of which show signs of being worked to produce a cutting edge.  This means that humans were present on Flores by that date, but it does not tell us which species that was.