What natural spot is known as ‘the blue eye of Siberia’?

Question: What natural spot is known as ‘the blue eye of Siberia’?

Options:

Vistula Lagoon
Lake Ladoga
Lake Baikal
Lake Onega

Correct answer:

Lake Baikal

Other mobile game answers:
Find the answers to emoji quiz, 600 celebs answers, trivia crack.