DM Glen Douglas is a NATO defence munitions depot in Argyll and Bute, Scotland, built between 1962 and 1966. As of 1989, it served NATO as a pre-positioned wartime ammunition depot, storing around 40,000 tons of missiles, depth charges, and conventional shells. It is now used only by the UK. The depot lies in Glen Douglas, a six-mile (10 km) glen through which the Douglas Water flows east to Loch Lomond. The depot itself is near the glen's head, less than a mile from Loch Long.