Do You Know that...? (1)

In a bend of Anahawin river (in Barangay Poypoy, Calintaan) called Montangcob point, a house-size boulder rests on the river bed, like an island. Etched on the side of the boulder is what is clearly a skeletal impression of a (large) snake. The boulder may be millions of years old.

(Source: http://en.wikipedia.org/wiki/Occidental_Mindoro)