The great theerthakund of Isha.
Lord shiva sivalingam was here in theerathakund in Isha temple.
This lingam statue was full did by mercury , This lingam was kept under the water in isha temple.
Three type of lingam are in this isha temple ,
1, Theerthakund lingam
2, Linga Bhairavi .........
3, Dhyanalinga.............
Theerthakunda lingam was kept under the land, look like cave .
Theerthakund lingam is the first one , peoples are praying the god inside the water ,
You can see here .
