The purpose of this work is to cast more light on some key aspects of the long jump and especially to fill the lacuna which has become ever more evident in the literature on the topic and is related to the kind of long-jump in the ancient pentathlon. This study is completely different or has very little in common with the theories proposed previously. For almost 200 years the long jump in the ancient pentathlon has remained a field of controversy. Scholars have admitted that the subject is confused and presents a great number of unanswered questions, essential and important for any understanding of the event: What significance can be attached to the supposed feats of the two ancient Greek athletes Chionis and Phayllus? What exactly was the long jump in the ancient pentathlon? Where did the long jump have its roots? What and where was the ancient skamma? What was the ancient bater and where was it located? Did athletes drop the halteres just before landing in the skamma? Did all athletes use the same halteres in the same games? How many attempts was each athlete allowed at the jump?