Laying on a star looking at stars
Both are awesome,but Id have to pick the mountain top for the view and rarified atmosphere,should be a crystal clear night up there.
Laying on the beach looking at the stars(:
A beautiful, grassy hill in Ireland.
In the mountains, on a beach I would keep listening for sneaky crabs...I love the aroma of the mountains.
I'd prefer the mountain. There are less streetlights and that sort of thing around. And all you can see is sky.
Oh...and I wouldn't be getting moisture and salt residue in my telescope. :)