This large untreated stone weighing 143,5 kilos is quite unique in its kind. Moreover, it is part of the few pieces of evidence we have about athletes' records during ancient times. It bears an inscription in the front written in the boustrofedon format: an ancient writing system having alternate lines written in opposite directions. The inscription states that Bybon lifted the rock over his head using one arm. Weight lifting was mainly a training exercise during ancient times and not an Olympic event. The achievement of Bybon, however, was extraordinary, so it was celebrated with an inscription on the particular rock that was offered to the sanctuary in Olympia.