Explanation:

The ancient Buddhist site on the bank of Bhima river near Kanaganahalli (forming part of Sannati site) in Kalaburagi district.

• An ‘abandoned well’ in the eyes of local villagers turned out to be the magnificent Maha Stupa, which was referred to as Adholoka Maha Chaitya (the Great Stupa of the netherworlds) in the inscriptions, and, the stone portrait of Emperor Ashoka, surrounded by his queens and female attendants.
• While the Stupa is believed to be one of the largest of its time, the stone portrait is considered to be the only surviving image of the Mauryan Emperor which had the inscription ‘Raya Asoko’ in Brahmi on it.
• The Maha Stupa is believed to have been developed in three constructional phases  Maurya, Early Satavahana, and Later Satavahana periods stretching from 3rd Century B.C. to 3rd Century A.D.

Hence both statements are correct.