Original sentence: It stands on an ancient mound, and excavations near its eastern wall have revealed that the site has been continuously occupied since 1000 BC.The fort was built at the site of ancient city of Indraprastha founded by the Pandavas from Maharbharat period, which is considered the 'First City of Delhi' , in fact until 1913, a village called Indrapat existed with the fort walls
Edited sentence: The fort was built at the site of ancient city of Indraprastha founded by the Pandavas from Mahabharata period, which is considered the 'First City of Delhi' , in fact until 1913, a village called Indrapat existed with the fort walls , and the present citadel stands on an ancient mound, excavations near its eastern wall have revealed that the site has been continuously occupied since 1000 BC