The Harghita Mountains (in Romanian

Romanian language

Romanian Romanian Romanian (or Daco-Romanian; obsolete spellings Rumanian, Roumanian; self-designation: română, limba română ("the Romanian language") or românește (lit. "in Romanian") is a Romance language spoken by around 24 to 28 million people, primarily in Romania and Moldova...

 Munții Harghita) is a volcanic mountain range of the Căliman-Harghita Mountains

Căliman-Harghita Mountains

The Căliman-Harghita Mountains are a group of mountain ranges in Romania.These ranges are considered part of the Inner Eastern Carpathians. Within Romania, however, it's traditional to divide the Eastern Carpathians in Romanian territory into three geographical groups , instead in Outer and Inner...

 in Harghita County

Harghita County

Harghita is a county in the center of Romania, in eastern Transylvania, with the county seat at Miercurea-Ciuc.-Demographics:In 2002, it had a population of 326,222 and a population density of 52/km².*Hungarians- 85%...

 of Romania, part of the Inner Eastern Carpathians.

The range is about 80 kilometers long and 20 kilometers wide, and is the "largest andesite

Andesite

Andesite is an extrusive igneous, volcanic rock, of intermediate composition, with aphanitic to porphyritic texture. In a general sense, it is the intermediate type between basalt and dacite. The mineral assemblage is typically dominated by plagioclase plus pyroxene and/or hornblende. Magnetite,...

mass" and the "largest volcanic body in the whole of Europe".

Its tallest peak is Hargita (Madarasi Hargita, 1801 metres).