See: Sumer-Meluhha contacts. Ziggurat of Mari and Mohenjo-daro stupa compared; R̥gveda chandas mantra compare with songs of Sumerian gala 'temple priests'
https://tinyurl.com/y6mvctqb I suggest that the stupa is a ziggurat and existed tegether with the citadel and workers' areas. Kalyanaraman, Sarasvaii Research Centre
Recently dry core drilling survey conducted by the Government of Sindh at Mohenjo Daro shows that actual area of Mohenjo Daro is 1350 acres (about 546 hectors). It was previously counted as 650 acres (about 300 hectors) and such article published in Daily Sindhi News paper "Kawish" on 18-08-2019 written by Mr.Manzoor Ahmed Kanasiro Director General Archeology Government of Sindh. This survey reveals that Mohenjo Daro is biggest site of Sindhu Sarswati Civilization. The area of some other IVC sites is given as under according to Wikipedia.
Mohenjo Daro 546 hectors (1350 acres)
Rakhi Garhi 350 hectors [ote: Rakhigarhi is 1400 acres (550 hectares)].
Harrapa 150 hecters
Ganeriwala 80 hectors
Dholavira 27 hectors
Lakhueen Jo Daro 40 hectors
