Polje

The flat floor of a polje may consist of bare limestone, of a nonsoluble formation (as with rolling topography), or of soil.

A polje typically shows complex hydrogeological characteristics such as exsurgences, estavelles, swallow holes, and lost rivers.

Some poljes of the Dinaric Alps are inundated during the rainy winters and spring seasons as masses of water called izvor or vrelo appears at the margins.

The former Lake Copais in Boeotia, Greece, fed subterranean channels (some artificial) until a 1957 land reclamation project drained it completely.

[6] As a borrowing, apart from English it can be found in a number of languages including: French, German, Greek, Italian, Spanish and Turkish (which uses polye).