Kilpisjärvi is a lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 located at the north-western tip of Finland

Finland

Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

 and northernmost Sweden

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

. Treriksröset

Treriksröset

Treriksröset , Treriksrøysa , Kolmen valtakunnan rajapyykki is the point at which the borders of Sweden, Norway and Finland meet....

, the point where the borders of Finland, Sweden and Norway

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

 join is located some 2.5 kilometres (1.6 mi) northwest from the lake.

The lake is divided into two parts, Kilpisjärvi and Alajärvi .

Being located on the Scandinavian Mountains

Scandinavian Mountains

The Scandinavian Mountains or the Scandes, in Swedish Skanderna, Fjällen or Kölen , in Finnish Köli and in Norwegian Kjølen, with the three latter meaning The Keel, are a mountain range that runs through the Scandinavian Peninsula...

, the lake is surrounded by numerous fell

Fell

“Fell” is a word used to refer to mountains, or certain types of mountainous landscape, in Scandinavia, the Isle of Man, and parts of northern England.- Etymology :...

s, most notably Saana

Saana

Saana is a fell in Enontekiö, Finland. Saana's summit lies above sea level and above the adjacent Kilpisjärvi lake. Geologically it is part of the Scandinavian Mountains. The peak is a popular destination for hikers and backpackers....

. The northern location and high elevation cause the lake to be frozen most of the year.