Kekura is the Russian word for stacks, which look like vertical stone columns. Stacks are formed over time by the force of wind. These rock formations look like a stone “fingers” sticking out of the ground. In the tundra, where there is no vegetation above the knee length, kekurs are unusual and beautiful. Sergey Dolya, the prominent Russian blogger and traveler, recently visited Chukotka and captured these amazing images.