The excavation was carried under the project 'Migration Routes from Kashmir to Central Asia' and funded by a German foundation.
The recovery of Kushan period terracotta pipes at village Ahan is considered as a "major discovery" as such pipes have been found only in Pakistan and Afghanistan in south Asia, the experts claimed.
Besides the pipes, they said, the joint team of Russian and local experts came across 2000-year-old subterranean structures, coins, pottery, terracotta tiles and so on.
Shah, who heads the project from Kashmir side, said the discovery was made with the help of state-of-the-art machinery brought by the eight-member foreign team headed by Natalia Polosmak and included two geophysicists, two geo-data experts and two land surveyors.
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With the help of the advanced machinery, only a small test pit was dug by the joint team and the result was beyond "our expectations", he said.
He said Germany is expected to fund ground excavation at the site next year after this discovery.