Lunga is one of the Slate Islands in the Firth of Lorn in Argyll and Bute, Scotland. The "Grey Dog" tidal race, which runs in the sea channel to the south, reaches 8 knots in full flood. The name 'Lunga' is derived from the Old Norse for 'isle of the longships', but almost all other place names are Gaelic in origin. The population was never substantial and today the main activity is an adventure centre on the northern headland of Rubha Fiola. The surrounding seas are fished for prawns and scallops and there is a salmon farm off the south eastern shores. The National Scenic Area of which the island is part, hosts a growing number of outdoor leisure pursuits.GeographyLunga is 2km west of the island of Luing and just north of Scarba. The nearest town is Oban some 16km to the north. The channel to the south, Bealach a' Choin Ghlais (pass of the grey dog), is only 200m wide and is scoured by the notorious 'Grey Dog' tidal race which reaches 8 knots when in full flood. According to an 1845 description:... about 1 cable broad, and the stream of water during the greater part of ebb and flood rushes along the narrow pass with much violence. So great is the overfall on the current, that even during moderate tides it is impossible to force a boat through.