According to B. B. Lal, former DG of ASI, Kalibangan site shows that an earthquake occured around 2600 BC, which brought to an end the Early Indus settlement at the site. It is perhaps the earliest archaeologically recorded earthquake.
Lothal is located between the Sabarmati river and its tributary Bhogavo, in the Saurasthra region of Gujarat. Its dockyard was well connected with the river Bhogavo.
The Pala ruler ‘Devapala’ was succeeded by Vigrahapala. Vigrahapala ruled for about 3 or 4 years after that, he abdicated his throne and began to live the life of an ascetic.