Ognian Voynikov
Google
If you ever try to imagine what Hell might look or smell like, go to Hverir. You will get a good sense of that, for sure.
This place is easily noticeable from afar, with its colorful mountain slopes, the smoke coming out of the ground and the load of tourists in the area. The parking is paid, as usual. The restrooms at the parking lot don't work and have an Out of Order sign which seems to have been there for some time now.
When you step out of your car and start walking towards the area, you'll need some time to get used to the heavy smell of sulfur and other earthy goodies. The walking paths are surrounded by boiling holes full of hot grey mud. Make sure you don't step outside of the paths, or you risk getting burned or even sink. At least that's what all the signs warn you about - it's your responsibility to keep yourself out of danger.
These colors are as much frightening as they are beautiful. A mixture of yellow, green, brown, greyish and bluish. Everything looks like coming out of a painting of an impressionist. A very memorable sight, indeed.
Still, the sense of being close to Hell never leaves you. And this is the impression this place left on me.