Returning back to the car after watching and photographing the impressive "Black Fall" Svartifoss over a basalt colonnade.
A refreshing 20-minute hike with a vast view to the sandy plains of glacial river Skeiðará.
According to wikipedia, Skeiðarársandur is the largest sediment plain in the word, sized to 1300 km2 and 56 km long. Other sources say 1000 km2. Glacial floods are very common.