Descend into a mesmerizing underground world at the Caves of Hotton, a true gem of the Ardennes. You'll follow your guide through immense galleries, marveling at the delicate draperies of stone and the sheer scale of the chasm. The tour involves a good number of stairs as you make your way 65 meters beneath the surface to see a subterranean river, but the comfortable lift ride back up makes the journey manageable. It's a captivating experience for the whole family, just be sure to wear sturdy shoes for the slippery paths.