Arrochar (/ˈærəxər/ ARR-ə-khər; Scottish Gaelic: An t-Àrchar [ən̪ˠ t̪aːɾəɾ] or An Tairbeart an Iar) is a village at the head of Loch Long in Argyll and Bute, Scotland.

[3] The village enjoys good communications, located at the junction of the A83 and A814 roads and is served by Arrochar and Tarbet railway station.

[11] The photograph shows the former torpedo testing facility at the head of Loch Long.

Torpedoes were fired up Loch Long from tubes at the front of the facility.

The now roofless shed to the left and the main part of the building have tracks where torpedoes were stored and worked on.