Prehistoric artwork has been discovered by an amateur archaeologist at a Perthshire mountain range.

The ancient carvings were discovered by rock art enthusiast George Currie at Ben Lawers, near Loch Tay.

Mr Currie discovered a piece of rock which has more than 90 cup marks, which are circular depressions in the stone.

Some of the cups have rings around them and a number of linear grooves can also be seen, with some still showing the individual blows of craftsmens' tools.

Similar discoveries have been made in the area, but it is unusual to find so many markings on the one stone.

The purpose of the artworks are still unknown.