The Grey Mare's Tail Waterfall and Loch Skeen hike in Moffat, Scotland is a stunning adventure that takes you to one of the highest waterfalls in the UK and a beautiful loch surrounded by craggy hills. The trail starts off with a steep climb to the waterfall, but levels out as you make your way to Loch Skeen. Along the way, you might spot some unique plants and wildlife, like wild goats and peregrine falcons. Just be sure to wear sturdy footwear, keep an eye out for livestock, and enjoy the breathtaking views!