After hiking one day we made it to Fjaðrárgljúfur Canyon a little after sunset, right as the light was fading. The day was super overcast and the lighting was shitty (as you can see from the pictures) but that didn't take away from the amazing landscape. The canyon was carved by glacier runoff over hundreds of years. You can either hike down below the canyon or hike along the rim up top. A lot of the rim is roped off to protect fauna and flora. The area is super trampled from tourists and they're trying their hardest to restore the ground cover (although it looks like people don't really care that it's roped off). Overall you feel like a tiny ant while exploring this area, especially about a mile and a half back around the rim!
This was one of our favorite stops along our road trip!