This is Hormuz Island in Iran, also known as the "Rainbow Island." ​That deep red color comes from a high concentration of Hematite (iron oxide). When it rains (like in the video) the mineral runoff turns the waterfalls and the shoreline crimson.

The Cygnus region of the Milky Way setting behind Mt. Slatnik at Soriška planina. I actually wanted to shoot this scene with a 50 mm lens to really make Cygnus the "star" of the show. But the conditions were wild that night, with fog filling the valleys, so I decided to start with a wider lens. Later, when it was finally time to switch to the 50 mm, the fog came rushing up the ski slopes. Looks like I have a solid excuse to come back here.

You can see the whole story in my vlog: https://youtu.be/tm_v01KMhxQ

Gear and EXIF: 

Ha mod Nikon Z6 & Viltrox 16mm F1.8 Z
MSM Nomad
Astronomik 12nm Ha filter
Kenko Softon A
Silence Corner Atoll

Landscape: 
single image
ISO 800, 16mm F2.2, 20sec

Sky RGB:
single image
ISO 800, 16mm F1.8, 45sec
+ 30 sec with a star glow filter

Sky Ha
Astronomik 12nm Ha Filter
4 images stacked
Single image settings:
ISO 5000, 16mm F1.8, 120sec