Felor examines the stone structure through the murk trying to see if it looks familiar in some way.
Rolls
Religion or History check - (1d20+4)
(7) + 4 = 11
Religion or History check - (1d20+4)
(7) + 4 = 11
perception - (1d20+6)
(5) + 6 = 11
Perception - (1d20+6)
(4) + 6 = 10
Perception - (1d20+6)
(10) + 6 = 16
Investigation - (1d20+1)
(9) + 1 = 10
investigation - (1d20+5)
(17) + 5 = 22