Otlukbeli Lake, the world's only travertine set lake formed by mineral waters in Erzincan, Turkey. Because of this feature, it is described as a natural monument. It leaves red deposits as abundant iron and sulfur come out of the fault source.
Serkan Do?u? was born in Mersin in 1985. He works as a civil servant in a public institution in Istanbul. He like taking pictures and traveling.