Iceland is filled with endless landscapes that will blow your mind. If you don't have the time to drive the entire Ring Road to the glaciers, then at least rent a car and drive a bit out of Reykjavik to see the lava fields and the Blue Lagoon. I wrote a bit about the lagoon previously, and wanted to share photos of what the lava fields outside of Reykjavik look like to encourage you to make this a stop in your visit.
The Eldhraun Lava Field is one of the most serene places you will ever visit and a wonderful experience when driving around Iceland on the “Ring Road” (Route 1). Leaving Reykjavik, you will suddenly find yourself lost in a sea of moss. All hard edges are lost and for a while the world exists only in the colors of the sky, the asphalt, and the moss.
Iceland is known for its marriage of the fire and ice landscapes. Formed by ancient volcanic eruptions, this island is home to black sand beaches and various basalt rock formations like those buried beneath these mossy layers. Over time, minimal greenery has covered these black rocks leaving behind endless shades of green.
These fuzzy and mossy basalt rocks go on as far as the eye can see and make for a really cool stop just past Vik, so make sure to add it to your list of things to see!