Plattenberg, Mountain summit in Lepontine Alps, Switzerland

Plattenberg is a 3,041-metre summit of the Medel-Terri chain in the Adula Alps, on the border between Ticino and Graubünden. It stands between Pizzo di Cassimoi to the south and Piz Terri to the north, with the Luzzone dam lying west of the mountain.

The Plattenberg lies in the Medel-Terri chain of the Adula Alps, between Pizzo di Cassimoi to the south and Piz Terri to the north, on the border of Ticino and Graubünden. The usual route to the summit starts at the Luzzone dam in the upper Blenio valley, west of the mountain. The sources record no dates or events in its climbing history.

The name Plattenberg refers to the flat rock slabs on the mountain's flank, visible from the Luzzone reservoir below. The peak sits on the language border between Italian-speaking Ticino and German-speaking Graubünden, and its two names appear on maps of both cantons.

The usual approach starts at the Luzzone dam in the upper Blenio valley, in Ticino; from there the route leads up to the 3,041 m summit. The peak sits between Pizzo di Cassimoi to the south and Piz Terri to the north, so orientation follows that ridge line.

The usual ascent starts at the Luzzone dam in the upper Blenio valley, in Ticino. The peak stands between Pizzo di Cassimoi to the south and Piz Terri to the north, roughly midway between the Luzzone and Zervreila reservoirs.