Lai da Nalps

Piz Vatgira (2,982 m (9,783 ft)) is a mountain of the Lepontine Alps and part of the extended Saint-Gotthard Massif, located south of Sedrun in the canton of Graubünden. The mountain lies between the valleys of Nalps and Medel, about halfway between Lai da Nalps and Lai da Sontga Maria. On its east side is a small glacier ending in the lake named Lai Verd (2,702 m). Piz Vatgira, or more precisely a lower 2,981 metre-high summit 350 metres south of the main summit, lies exactly above the Gotthard Base Tunnel, at its deepest point. The tunnel, the longest and deepest in the world, runs 2,450 metres (8,040 ft) below the ground. Piz Vatgira is the highest of the three main peaks above the base tunnel, the other two being the Chrüzlistock and Pizzo dell'Uomo.

Piz Gannaretsch is a mountain in the Lepontine Alps, overlooking Sedrun in Graubünden. At 3,040 metres above sea level, its summit is the highest point of the range lying between St Gotthard Pass and Lukmanier Pass. The massif of Piz Gannaretsch separates the valleys of Lake Nalps (west) and Lake Sontga Maria (east). A glacier named Glatscher da Gannaretsch lies over the north-western flanks of Piz Gannaretsch.

Piz Maler is a mountain of the Swiss Lepontine Alps, located south of Sedrun in the canton of Graubünden. It lies at the northern end of the range between Lai da Curnera and Lai da Nalps.

Dieni railway station (German: Bahnhof Dieni) is a railway station in the municipality of Tujetsch, in the Swiss canton of Grisons. It is an intermediate stop on the 1,000 mm (3 ft 3+3⁄8 in) gauge Furka Oberalp line of the Matterhorn Gotthard Bahn.

Porta Alpina (from Romansh: Alpine Gate) was a proposed railway station to be located in the middle of the Gotthard Base Tunnel, serving the Alpine village of Sedrun in Switzerland. It was intended to promote tourism and the economy in the region of Graubünden. The project was put on hold as uneconomical in 2007, and then indefinitely shelved in 2012. The current multifunction station is only used for emergency stops and maintenance. The portal lies 800 m (2,600 ft) above the tunnel.

Rueras railway station (German: Bahnhof Rueras) is a railway station in the municipality of Tujetsch, in the Swiss canton of Grisons. It is an intermediate stop on the 1,000 mm (3 ft 3+3⁄8 in) gauge Furka Oberalp line of the Matterhorn Gotthard Bahn.

Sedrun railway station is a metre gauge railway station serving the village of Sedrun, in the Canton of Graubünden, Switzerland. The station is at the eastern end of the Oberalp Pass. It forms part of the Furka Oberalp Bahn (FO), which connects Brig in Valais, via Andermatt in Uri, with Göschenen, Uri, and, via the Oberalp Pass, with Sedrun and Disentis/Mustér, Graubünden. Since 1 January 2003 (2003-01-01), the FO has been owned and operated by the Matterhorn Gotthard Bahn (MGB), following a merger between the FO and the Brig-Visp-Zermatt railway (BVZ).

Lai da Curnera is a reservoir on the river Rein da Curnera in the municipality of Tujetsch, in the Grisons, Switzerland. The reservoir is linked to Lai da Sontga Maria and Lai da Nalps in the neighboring valley. The lake's volume is 41.1 million cubic metres (33,300 acre⋅ft) and its surface area 81 ha (200 acres). All surrounding rivers are diverted into the reservoir, among them the Rein da Tuma, coming from Lai da Tuma (Tomasee), near the Oberalp Pass and known as the source of the river Rhine. The Vorderrhein, or Anterior Rhine as the Rhine is called in this area, passes just about 2 kilometers north to the barrier of the lake. A multiday trekking route is signposted along the young Rhine called Senda Sursilvana, from where the barrier can be spotted easily.

Tujetsch (Romansh pronunciation: [ˈtujətʃ] ; German: Tavetsch) is a municipality in the Surselva Region in the canton of Graubünden in Switzerland. It is the westernmost municipality of the canton, connected to Urseren (canton of Uri) by the Oberalp Pass.

Piz Pazzola is a mountain of the Swiss Lepontine Alps, situated near Sedrun in the canton of Graubünden. It lies on the range west of the Val Medel.

Bugnei railway station (German: Bahnhof Bugnei) is a railway station in the municipality of Tujetsch, in the Swiss canton of Grisons. It is an intermediate stop on the 1,000 mm (3 ft 3+3⁄8 in) gauge Furka Oberalp line of the Matterhorn Gotthard Bahn.

The Rein da Curnera (in German: Curnerarhein) is a right tributary of the Anterior Rhine and one of the main tributaries of the Rhine (see Sources of the Rhine). It is fed from multiple sources and glaciers at the southern end of the valley. The river is about 8 kilometres (5 mi) long and flows north through the Val Curnera. Approximately in the middle of its route, a dam was constructed by Kraftwerke Vorderrhein AG (the local hydropower company), which formed Lai da Curnera. At this point, the Rein da Curnera takes up a left tributary, the Rein da Maighels. The Rein da Curnera flows into the Anterior Rhine near Tschamut in the Tujetsch valley.