The representation on this capital has been identified as the Ascension of Alexander the Great. Another possibility is the Ascension of Elijah. The motif stems from late antique representations of the emperors of Rome ascending to heaven as gods.
The representation is shown twice, on the north and south faces of the capital.

East View: wings from the north and south views.

South View: Roped figure taken up by eagles.

West View: wings from the north and south views.

North View: Roped figure taken up by eagles.

DETAILS

Detail: north view: roped figure

Detail: north view: impost

Related capitals:

Non-Biblical Capitals:
Capital 20: Martyrdom of Peter and Paul
Capital 24: Martyrdom of Lawrence
Capital 35: Martyrdom of Sernin
Capital 37: Martyrdom of Fructuosis, Eulogius, and Augurius
Capital 42: Miracles of Benedict
Capital 49: Crusaders before Jerusalem
Capital 54: Miracles of Martin