This is still not fully explained in my view, and there are still questions that need to be asked.
We have been told different reports by the media about the circumstances of his decision to go for his walk.
Firstly, it was reported that he said to his wife that he was going for a walk "to the centre of the island". Another report said he "cheerfully said goodbye" to his wife, and then the last report said that he told his wife that he was not feeling well and was returning to the villa.
His wife in her statement after Mosley's body was found, said that he "took a wrong route" but "did incredibly well" to get as far as he did. This seems an odd thing to say if she thought he was returning home feeling unwell, and which which was in the opposite direction and only about a twenty minute return journey, that presumably both of them took on foot to get to the beach that same morning.
I can understand him wanting to explore the island a bit more on foot, but cannot understand why he seemingly took unnecessary risks in those conditions, and if he felt at all unwell, he would not be doing that in the first place.
The latest news has just been reported by the BBC, and they said this:
"Footage taken nearby, which the BBC has been told about but not seen, is said to show what appear to be Dr Mosley's final moments, as he makes his way down a slope before disappearing behind a wall."
The "wall" reference seems to place him much closer to the bar area and entrance where he was found, than the wire fencing higher up the gradient. So bad luck that he couldn't make those last few metres, and was never seen by anyone.