A university librarian was killed while descending a 3,000ft mountain after her husband used a smartphone app to navigate instead of a map, an inquest heard.

Jane Wilson and her husband Gary were looking for a safe route off Snowdonia’s Tryfan peak at dusk when the incident happened, on March 25.

The couple, both experienced walkers, had decided not to go to climb the summit but instead, using Mr Wilson’s smartphone to guide them, headed across the mountain’s west face.

In a statement to John Gittins, the coroner for north Wales east and central, Mr Wilson said his wife went a short distance ahead of him to look for a suitable route.