Lock point Trin

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Hill from Crap Sogn Parcazi, direction Trin

The lock point Trin (army designation lock no. 1205) was a defensive position of the Swiss army . It is located west of Trin on the old road from Chur to the Vorderrhein Valley between Tamins and Flims . The lock was built by civil companies in 1941–1943 and is a military historical monument of national importance.

Lock point Trin

In the Middle Ages, Trin formed the barrier to the Bündner Oberland (Vorderrheintal). The Porclas bottleneck west of the village of Trin, above the old road between Trin and Flims, was dominated by the fortified church of Crap Sogn Parcazi ( Rhaeto-Romanic for "Stone of St. Pancras ") built in the early Middle Ages .

During the Second World War, Trin was built as the last barrier in front of the Reduit with the task of preventing the enemy from entering the Reduit ( Gotthard fortress ).

The locking points Trin and Segnespass were occupied by the Mountain Infantry Regiment 18 , which was intended as a reserve of Mountain Army Corps 3 .

Crap Barcazi Infantry Plant - Crap Pign

Lock point Trin Infanteriewerk A 7762

The main plant of the Trin locking point is an infantry plant (army designation A 7762) in the rocks of Crap Sogn Barcazi and Crap Pign ⊙ . The plant was built in 1941–1942 as an underground infantry cavern in the rock on three floors connected by 300 steps and tunnels. It was armed with four machine guns and two Lmg 25 light machine guns and could accommodate a crew of 30. The Z312 cable car up to the Crap Sogn Barcazi , the only factory cable car in an infantry factory in the canton of Graubünden, was used to transport materials. 46.828956 9.35038

At Crap Ueara is the shelter A 7761, a natural cave.

Terrain tank obstacle T 4071

Anti-tank bunker A 7765 at Hauptstrasse 19 disguised as "WV Trin" (water supply Trin)

In the vicinity of the main plant in the direction of Trin there is an all-terrain armored vehicle (GPH) obstacle with humps, rails and tank wall ⊙ at Parclis . 46.82762 9.35034

It was protected by three infantry bunkers that were built in 1941–1942:

Anti-tank bunker A 7765 "Porclis Strasse" was originally armed with a tank cannon, later with a machine gun and a light machine gun and had a crew of 8. It is located directly on the road and is camouflaged as the “Trin water reservoir” ⊙ .46.828068 9.349692
Infantry bunker A 7766 "Porclis West" originally had an infantry cannon and later an anti-tank cannon and a light machine gun and had a crew of 10. It is located near the road and disguised as a wooden barn ⊙ .46.827629 9.349021
Infantry bunker A 7767 "Porclis Nord" was armed with two machine guns and one light machine gun and had a crew of 12. It is located in the forest near the tank obstacle (GPH) and is camouflaged as a forest hut ⊙ .46.826984 9.349916

Terrain tank obstacle T 4070 "Laseaz"

Off-road tank obstacle T 4070 «Laseaz» seen in north direction

Infantry bunker A 7770 "Laseaz North"

Between the Rhine Gorge and the village of Digg , a BPH with Flankierwerken created 1941-1942 extended ⊙ . This should prevent the main blocking point A 7762 from being bypassed: 46.819465 9.352926

Infantry bunker A 7768 "Digg" was armed with a machine gun and had a crew of 8. It is located between the west of Digg and northeast of the GPH ⊙ and is camouflaged as a rock.46.824416 9.35284
Anti-tank bunker A 7769 “Porclis Süd” was armed with an anti-tank cannon and a machine gun and had a crew of 14 men. It is located at the north end, west of the GPH and is camouflaged as a water supply ⊙ .46.823089 9.351482
Infantry bunker A 7770 "Laseaz Nord" was armed with two machine guns and one light machine gun and had a crew of 10. It is located west of the center of the GPH ⊙ and is camouflaged as a rock. A light machine gun position is connected to it, which can only be reached via a 30 m long tunnel followed by a 10 m high shaft.46.821301 9.350763
Anti-tank bunker A 7771 was armed with an anti-tank cannon and a machine gun and had a crew of 16. It is located at the south end, west of the GPH ⊙ .46.819492 9.351354

At the southern end of the GPH is the shelter A 7783 «Laseaz» ⊙ . 46.819476 9.352271

Segnespass lock point

The blocking point on the Segnespass at 2625 m had the task of preventing an enemy advance from the Flims area to Elm in the canton of Glarus . Two caverns and a refuge (B 2303) were built on the pass:

Felswerk A 6705 «Segnes-Mannen» armed with a machine gun and a 5-man crew ⊙ .46.901355 9.224435
Felswerk A 6706 «Tschingelhorn» armed with a light machine gun and a 5-man crew ⊙ .46.901625 9.224444

The facilities at Segnespass were defended by the factory occupation detachment south .

Club lock Trin

Museum lock Trin

The Sperre Trin association was founded in October 2009 to maintain the lock. According to the website, the fortress museum is open twice a month from May to October. The guided tour includes the rock in Crap Sogn Barcazi and Crap Pign and the bunkers Porclas North, West and Street as well as the kitchen of the fortress guard (FWK). Today the facility is entered through the emergency exit, the former main entrance is no longer accessible.

Since the material transport for the maintenance of the system is complex, the association Sperre Trin started in July 2015 with the reconstruction of the factory cable car, dismantled by the army in 1996, according to the old original plans. The cable car was completed at the end of August 2015.

The tour lasts around 3 hours.

Ilanz oxygen factory

In the Ilanz air separation plant (“Ilanz oxygen factory”), high-purity oxygen and nitrogen were produced from 1969 to 2005 and given to the sanitary troops mainly for the Disentis military hospital. This should guarantee the autonomy of supply. The only remaining system of this type was repaired and looked after by the fortress museum Sperre Trin and could be viewed for the first time on January 18, 2020.

literature

Tom Schnyder: Documentation about the Trin locking point . Fortress Museum Sperrstelle Trin, 2014. Detailed summary of the Sperrstelle Trin: history, locations and profiles of the facilities, information about the association (19 pages, color, bound).
Peter Baumgartner, Hans Stäbler: Fortified Graubünden. Wolves in sheep's clothing. Military History Foundation Graubünden, Chur 2006. New edition Verlag Desertina, Chur 2016, ISBN 978-3-85637-485-3 .
Silvio Keller, Maurice Lovisa, Thomas Bitterli: Military monuments in the canton of Graubünden. Federal Department of Defense, Civil Protection and Sport (Ed.), Bern 2003 [1]