Is there a word for the landscape you see from the top of a mountain? Or is there a phrase? The only word or phrase I can think of is "stretching view of a landscape". I am wondering if there's a better phrase or word for this.
I think panorama fits nicely
An unobstructed or complete view of an area in every direction.
The example at the bottom of the linked definition even applies directly to your case
We admired the breathtaking panorama from the top of the mountain.