Mono Basin and Hot Creek Area

When calcium-rich springs flow up through the lake bottom, the calcium bonds to carbonates in the lake water. Together they form calcium carbonate, a type of limestone. This solid material builds on itself, gradually becoming a tufa tower. When the lake level drops, the delicate, exposed tufa stops growing. Lithoid/Stone-like Tufa around the lakeshore can be shaped as thin spires, bulbous knobs, slab-like sidewalks and boulder coatings.