Bernardo Carpio is a legendary figure in Philippine Mythology who is said to be the cause of earthquakes. However, since Filipino folk literature is mostly oral in origin, there are numerous versions of this tale. Some versions say Bernardo Carpio is a giant, as supported by the enormous footsteps he has reputedly left behind in the mountains of Montalban. Others say he was the size of an ordinary man. However, all versions agree he had a strength that was akin to that of Hercules.

I hope it helps!

The basic form of the LEGEND (alamat)is that Bernardo Carpio, a being of great strength, is trapped in between two great rocks in the Mountains of Rodriguez, Rizal (formerly Montalban, Rizal).