Volcanic crater.
Added: See this post from 2024 for better views.
Rauðaskál (lit. Red Bowl) is part of the Hekla volcanic system in the south-central Highlands of Iceland.
The winds were so ferocious on the top of the crater that I could barely hold my ground.
The first image is absolutely stunning! Worth all the effort, I’d say 🙂
Raji, good to hear from you after a long time.