Sperrstelle Russein, museum in Switzerland

Sperrstelle Russein (army designation Sperre Nr. 2306) is a Swiss Army defensive position east of Disentis/Mustér in the Vorderrhein valley. It consists of the Stalusa infantry fort and, 1.2 km downstream, the Madernal anti-tank obstacle, a line of concrete "Toblerone" blocks on both banks of the Rhine guarded by six infantry bunkers.

The fortress was built from 1939 to 1945 in response to European security concerns and aimed to block the Oberalp and Lukmanier mountain passes. The Stalusa fort was added around 1967 to strengthen the main installation and enhance defensive capability during the Cold War.

The name Sperrstelle refers to its blocking function, designed to control access through mountain passages. Visitors can observe how the site is embedded in the local landscape and understand its role in regional defense identity.

The site is accessible by car or on foot, with parking available nearby. Visitors should wear comfortable shoes as pathways are uneven and exploration involves walking through tunnels and old structures.

The Stalusa fort, built in 1967, is armed with two 8.1 cm fortress mortars Model 1956/60 whose four-kilometre range covered the Madernal anti-tank obstacle. The site retains its original, non-deactivated equipment, and the Madernal hinten bunker A 8713 opened in May 2015 as an extension of the Fortezia Stalusa museum, housing an infantry weapons exhibition in its ammunition magazine.