Two more giant craters found in Siberia, origin still unknown

Two more craters of unknown origin have been spotted in Russia's Siberia region, weeks after a similar-looking hole was found in the isolated northernmost area, a local paper reported.

The Siberian Times, an English-language newspaper, published pictures of two new giant holes found by reindeer herders, one located in the Yamal and the other in the Taymyr peninsula, both above the Arctic circle.

The paper said that theories of their origin ranged from meteorites or stray missiles to aliens or an underground gas explosion. The report could not be confirmed independently.

Russian state television reported this month that a giant hole had appeared in the gas-rich Yamal peninsula where temperatures plummet below minus 50 degrees Celsius and the sun barely rises in winter.

Yamal is one of Russia's richest regions in natural gas.