Akchour Cascade Talassemtane National Park Morocco
This hike through the Talassemtane National Park cuts through a deep valley in the Rif Mountains, a mountain range famous for once being among the largest producers of hash in the world (but the title is now held by a region of Afghanistan). The day hike takes about 3 - 4 hours round trip, but you'd want to add at least an hour to swim at Akchour Cascades.
Follow the creek that leads from the entrance to the park. There's no real signage on the hike and not much of a map. There's not much of a trail to follow either but so long as you keep the river in your sights it's going to lead you to the waterfall.
At one point you have to scramble over some boulders but there's some writing on a rock to let you know you're going the right way. After you've been hiking for about an hour and a half you'll enter a patch of dark cedar forest inhabited by monkeys. Continue a bit further and you'll find some tents and makeshift cabins along the river and you'll know you're nearly at the falls. The falls only get sun when it's at it's peak so leave early if you can because by mid afternoon the water will be in shade and it gets pretty cold.