Back Walkover: A control skill gymnastics move starting and finishing on the feet and made by lifting one leg, arching back into and passing through a handstand position by bringing one foot, then the other over the top and stepping down from the handstand into a lunge. Done on floor and beam and often used on beam in combination with a back handspring to fulfill the flight series combination requirement.

This is stylized and goes to a split, but at least, it starts with the leg up

Traditionally, back walkovers are done with the leg starting up in the front. The USAG compulsories have so many gymnasts doing back walkovers with the leg starting down.