Hargla Depression

21 km long

Floodplain meadow at the Mustjõgi river of the Koiva-Mustjõe habitat protection area
http://pilt.delfi.ee/picture/5999411/

Located between the Ugandi Plateau and the Haanja Height

A remnant of the plateau form of the pre-glacial times

After the Glacial Era - large ice meltwater lake that left a lot of sand

A system of several depressions and vales

Bedrock: sandstones of the Gauja and Amata strata and in the south, unique denudations of the dolomites of the Plavinas stratum on the banks of the Peetri river

Pine forests on the banks of the Gauja/Koiva river

The rivers discharge to the Gauja/Koiva river

Pine forests on the banks of the Gauja/koiva river

Floodplain meadows, unique oak wooded meadows with unique flora and fauna

Heritage sites: limestone buildings and lime burning facilities

The Mustjõgi river bird area