You can see a lot from this one picture.
First, the indigenous Bolivian in the foreground. We are looking at hundreds of years in that face. The Incas probably looked just like that.

Fantastic bread everywhere - cruise bread for those who know what I mean.

I was there at 6:30 in the morning so most of the "stalls" are not open for business yet. Guy on the left is opening his. The stalls stretch as far as you can see, and more. And, you walk down about 20 yards and there is a cross passageway, stretching left and right as far as you can see, and ten yards down either way there is another cross passageway heading the same way as this one. You could get lost in here forever.