It is mentioned that in 1333 AD, princess Sonwa, daughter of Sandeva, a Nepali king, came here frequently to take baths in the Ganga River through this tunnel.
Disebutkan bahwa pada tahun 1333 M, puteri Sonwa, anak perempuan Sandeva, raja Nepal, sering datang ke sini untuk mandi di Sungai Gangga melalui terowongan ini.