In Batken, a spring flows with the smell of rotten eggs — the water from it was used to treat Russian soldiers for scabies
In the Kadamjay district of the Batken region, in the Ak-Turpak aiyl okmotu, there is a spring known as Pidap-suu, which local residents call Sasyk-Bulak. This source continues to function, and its water contains hydrogen sulfide, which leads to the characteristic smell of rotten eggs that dissipates in fresh air.