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"North Africa was the Bible Belt of ancient Christianity," says Prof Christopher Bellitto, a historian at Kean University in the US.

Former Everton striker Moise Kean - barely involved in a first half where he had seven touches of the ball - scored twice and suddenly a miracle comeback was on.

Kean, 24, carried on playing following treatment before losing his balance and falling to the floor in the 64th minute.

Instead of percolating below the surface, water starts flowing downhill — picking up rocks and debris on in its way, Kean said.

Geological Survey hydrologist Jason Kean said in a previous interview.