Hike the plains

Laguna Sora Pata offers this rare and protected species of ducks with their surprisingly large nests on the lagoon. Quite picturesque with the snow covered large mountain in the back. If you follow the trek further northeast, shortly after the end of the lagoon you can regularly see large amounts of viscachas.

A great place to see birds like the Andean avocet, the Andean lapwing, the horned coot, the ruddy duck, the cattle egret, the Puna teal, or the yellow-billed pintail.

Nice and calm waters with lamas feeding in front of the picturesque mountain ranges. Great for some shots with the camera.

Surprisingly versatile with hot pools, geysers and mud pools. It also has some little and free and natural pools you can soak in—just select a place in the river that has reasonably much space and is hot enough. But also, check out you map app to find them. The very first pool is already great for a dip. (Control the heat of pool with rock near small waterfall, which blocks the water to the geyser. You can help making the pool bigger & deeper, namely where the water is calm and the hot geysers are. Maybe even bring a shovel, but do not tell the locals about this secret place, or it will be gone soon. Allow for enough cool water to flow by outside of the pool. And watch out, the soil can be very hot.)

Quite expensive, considering the hot spring along the Salar de Uyuni tour is just Bs. 6. There are other (private) hot springs nearby, try this hot spring or this one. From the latter a trail north leads to two more hot springs, which might be for free.

A little cheaper and free if the lady is not there. So, go early or late (coming from the Tres Lagunas Trail), or just be lucky (e.g. in off-season).