They are all wearing hats. In the background I see herds of cattle among the hills. I also see trees and grasslands in the background. Sunlight is shining on the cowboys, cattle, trees and the land. The trees are casting shadows on the land.
Some cattle are in the shade.
I believe that these Texas cowboys are herding the cattle together. They may be taking them to a stockyards to sell the cattle. The cowboys seem to have gathered together to pose for this photo. In addition, they may be taking a break from moving the cattle further. There must be hundreds of cattle in the background.