Solution:The structure constructed in the southern part within the defense wall of the Sirkap mound (Taxila) is the Rajprasad. The term Rajprasad, meaning "Royal Palace," was assigned by archaeologist Sir John Marshall to a large
complex he excavated in the southern sector (Block K) of the fortified city. This massive structure, with its spacious courtyards, thick walls, and multiple chambers, was identified as the royal palace and administrative center of
ancient Sirkap. Based on the archaeological literature and site
descriptions, the Kunal/Kunala Stupa is located on a hill just south of Sirkap (outside and overlooking the city), while the Rajprasad is a built feature inside the fortified town. That means the statement "Kunal Stupa is inside the southern part within Sirkap's defence wall" does not match most published site descriptions.