An unusual mountain-an inaccessible mountain;
Lofty; Majestic-majestic;
2. Describe water:
A slow-moving stream;
Clear stream-clear stream;
A trick-a trickle;
The river of no return-the rushing river;
Violent; Turbulence; Surging; Rage-surging (adjective);
Surging waves; Choppy-choppy (phrase)
If you want some hills, swamps, forests and the like, you can ask again.
Please adopt ~O(∩_∩)O~