sentences:  The causeway became submerged when the water level in the loch was raised by estate work and the building of a dam in the 18th century.The castle was used as the site of the island graveyard in BBC TV’s ‘Monarch of the Glen’.Located in Cairngorms National Park, the loch and the forest around it are popular with birdwatchers, walkers, mountain bikers and day-trippers.