Where was ashoka's rock and pillar edicts located?

The Major Edicts are not located in the heartland of Mauryan territory, traditionally centered on Bihar, but on the frontiers of the territory controlled by Ashoka.

The pillars of Ashoka are a series of columns dispersed throughout the Indian subcontinent, erected or at least inscribed with edicts by the Mauryan king Ashoka during his reign from c. 268 to 232 BC. The Pillars of Ashoka are among the earliest known stone sculptural remains from India.