Gljúfrafoss

Take Highway 1 east from the town of Hvolsvöllur for just over 20km, then turn north (left) onto Route 249 where signs point to Seljelandsfoss and Þórsmörk. There is a large pullout to park at right in front of the camping area near the falls, 1.3km north of the highway. The falls can be seen here, but closer views are had by walking through the grassy field at the camping area to an information board at the base of the falls. You can also park at Seljelandsfoss and follow the trail across the footbridge to the falls - passing two other smaller waterfalls along the way - in about 3/4km.Gljúfrafoss is the neighboring waterfall to the much more famous and often visited Seljelandsfoss, both found just off the Ring Road between the towns of Hvolsvöllur and Skoga. Both of the falls can be seen from the highway when driving east, though Gljúfrafoss is much less prominent due to the smaller size of its stream and its partially hidden position. Unlike Seljelandsfoss which plunges over a sheer cliff, this waterfall veils down a very uniquely runneled cliff in a narrow veiling horsetail fall. We were not able to measure the falls upon our visit due to some incredibly inclement weather, but the sign on site says it drops 130 feet (40m) and we see no reason to doubt this figure.
The real stand out feature of the falls is the way in which it interacts with the surrounding geology. Not only does the stream carve interesting channels in the rock which it falls down, but it has done so by carving out essentially a huge pothole in the middle of the cliff, such that there is a solid 40-foot tall rock wall in between the falls and the grassy meadow just to its west, with the exception of a 5-foot wide slot canyon that extends through the wall where the creek drains out from - complete with a large chock stone wedged in between the walls that effectively makes it seem like the creek flows out from a cave. This also has the unfortunate effect of directing all the spray coming off the falls right at visitors who peer up or walk in the canyon, guaranteeing them a soaking.The signs below the falls specifically call it Gljúfrabui, which translated to english means "Canyon Dweller". The National Land Survey of Iceland lists it both as that as well as Gljúfrafoss.