St. Mary's Islands
St. Mary's Islands, also locally known as Thonsepar (literally "Coconut Islands"), a set of four small uninhabited touristy islands in the Arabian Sea off the coast of Malpe in Udupi district of Karnataka state in India, known for their distinctive geological formation of columnar rhyolitic lava, which are one of the four National Geological Monuments of India located in Karnataka state out of total 34 such monuments in India proscribed by the Geological Survey of India for their protection, maintenance, promotion and enhancement of geotourism.