Large open spaces (either prairies or lakes) allow to look far into the distance in all directions.
It conveys an almost paradoxical state of mind: Being small and unimportant in this vast landscape, but also (subjectively) being at the center of it.
Being there in the late afternoon gives the opportunity to experience another contrast. Just before the wintry gray turns into the black of the night, the sun makes one last effort, just before it hits the horizon.
Then, for a short moment, the black and the gold coexist, and the limiting horizons become an illusion.