Kaldoaivi is the largest wilderness area in Finland. The scenery and terrain of the unknown fell wilderness range from steep and deep river valleys to gently sloping fells. Sammuttijängän-Vaijoenjänkä's the Swamp Conservation Area is connected to the wilderness area in the southwest.
The Unified Wilderness is not limited to the Finnish side, but the unknown area continues on the Norwegian side. The Kaldoaiv Wilderness is ideal for day trips to multi-day hikes. The area is a rewarding hiking destination for experienced hikers, and a beginner hiker should explore the area with more experienced hikers.