Greek search crews have found the body of a British scientist, who went missing while on holiday on the Aegean island of Ikaria, in a ravine near where she had been staying, the authorities said Wednesday.

The police said the body of the Cyprus-based astrophysicist Natalie Christopher, 34, was found in a 65-foot-deep ravine. Ms. Christopher was reported missing on Monday by her Cypriot partner, with whom she had been vacationing, after she went for a morning run.

The cause of death was not immediately clear. An autopsy was scheduled for Thursday.

Rescuers told Greece’s state ERT TV that the woman appeared to have slipped and suffered fatal injuries while rock climbing.

Police officers, firefighters, volunteers and the Coast Guard had been scouring the area where Ms. Christopher had been staying during her vacation, which has paths along ravines and steep seaside cliffs. A specialized police unit with geolocation equipment was sent to the island to help in the search.