Is this a slime mould or some kind of fungus? Spotted in a dark damp tunnel. Very wet looking and salmon-pink in colour (photo looks more orange)
No identification made yet.
No interactions present.
I would go for mineral staining. There is volcanic rock in the area. It would be a mixture of iron and another white mineral. This would help to explain the false color with the camera flash.
Lat/Lng: 55.94148, -3.17156
OS grid ref: NT269726