The north part of the Salar de Uyuni must be the lower part. There are shallow salt water pools next to the shore and a few flamingos feed in the estuaries. There are not the 1000's of flamingos like the lakes in the south but the ones that are there are beautiful nonetheless. The village is close to the shore. It is an easy walk to see the flamingos but they are shy and you must move slowly.
In a small canyon on the side of Volcan Thunupa are sacred tombs in caves where people were buried as mummies. You may only go inside one of them. The details are in my travelogue here. The dust in the picture is from a 4WD vehicle returning from the mummy caves at sunset. The village of Coquesa is in the foreground. There is a gate where the road goes through the village. Each vehicle must pay a small fee (20 B). It is also where your driver gets a key to the mummy cave.
Llamas love to graze in the green areas next to the Salar. I don't know what this plant is but it has to be very salt tolerant. It seems to be relatively resilient to foot traffic, so take a walk at sunset.
A llama's ears are marked to show ownership. These llamas were in the hills on the the way to the mummy cave.
Just outside Coquesa there are strange rock formations. Niches in these rocks are used as burial sites.