This is kind of ancient river site which formed from limestone. The site is very exotic and wonderful. And as water source in the jungle, Grojogan Dhuwur Sumbermiri has surrounded by nature scenery and fresh air.
Grojogan Dhuwur Sumbermiri precisely located in Lengkong district area, about 35km to wast direct of Nganjuk downtown. This nature destination of Nganjuk has maintenance by Nganjuk government.