Femri-Fellsfoss is a rad waterfall in Iceland that's part of the Skógá river. It's about 48 feet tall and plunges into a narrow canyon, creating a cool misty vibe. You can hike to it from Skógafoss along the Laugavegur trail and get a sweet view of both Femri-Fellsfoss and its buddy, Innri-Fellsfoss, cascading down the dark volcanic rocks. Totally worth checking out if you're up for a little adventure beyond the usual tourist spots!