The waters slowly cut through the rock which had been pushed up by the geological forces which formed the Scottish Highlands some 500 million years ago.
At that time, the Bruar Water flowed through a treeless, barren landscape, and the falls were said to be a somewhat disappointing sight for those forced to make their way over the slippery rocks and steep banks to view them.
It entreated John Murray, 4th Duke of Atholl, the owner of the land, to plant some trees and bushes around the falls: Would then my noble master pleaseTo grant my highest wishes,He'll shade my banks wi' tow'ring trees,And bonnie spreading bushes.Almost ten years later, after Burn's death in 1796, Murray began an ambitious scheme of planting that would eventually include 120,000 Larch and Scots Pine.
Once hostilities ended, the trees were replanted, again with Scots Pine but this time mixed with Hybrid Larch, Fir and Spruce.
Native species were also allowed to colonize the banks: nowadays, the conifers are mixed with Mountain Ash, Willow, Aspen and Birch.