Concept:Mesolithic rock art sites in India and their discovery history.
Explanation:The first rock paintings in India were discovered at Bhimbetka, Madhya Pradesh, by V.S. Wakankar, not by Alexander Burns at Sohagighat. Statement 1 is incorrect.
V.S. Wakankar indeed noticed the Bhimbetka rock formations from a train window while travelling from Bhopal to Itarsi, and he got off at the nearest station to explore them. Statement 2 is correct.
In the rock art of Orissa, paintings and engravings often appear together in the same shelter. Statement 3 is incorrect.
Thus, only statement 2 is correct.
Answer:2 only