Sof Omar Cave

Around 100km east of Robe, the fast-flowing Web River runs through a deep gorge and then cuts straight through a limestone hill. Though underground for only 1.5km, the aeons of erosion have carved 15km of passages. Proposed for World Heritage listing, the vaulted chambers, flying buttresses, massive pillars and fluted archway sometimes resemble an Antonio Gaudí cathedral. The cave is venerated by area Muslims due to Sheikh Sof Omar Ahmed reputedly taking refuge here in the 11th century. There’s a pilgrimage every November.