By a devious route, you can visit the Crater Lake Kerið between Þingvellir National Park and the Great Geysir. By the way: this strange letter ð is pronounced like the English “th“.
Arriving there you have to pay a little entrance fee of 400 ISK. Kerið was the only attraction we had to pay for during our whole stay in Iceland. We have been a little shocked after we had to pay for parking at Þingvellir and now for entrance at Kerið since these smaller amounts of money here and there would sum up pretty fast. Good News: As I said, you won’t have to pay for many things from now on.
Kerið is a lake inside of the crater of a volcano that erupted somewhen back in time. Due to its volcanic origin, it is characterized by the red volcanic stones. You can walk on the edge of this former volcano first and later go around the lake down in the crater. If you are lucky, you will be able to capture a beautiful light that lets the water shine blue and reflect the sky while the crater presents its red beauty, which is quite an interesting combination of contrastive natural colors. The walk itself is not too fascinating, but it is a nice to have one on your trip. Unfortunately, we arrived there at midday which is quite challenging for photographers. I didn’t get a good shot there. Try your luck, maybe you can do better!