A peculiarity of Skógafoss is that you often see a rainbow there. The waterfall looks a bit like hair of a blond Icelandic girl.
The foto makes an impression that the waterfall is small while in reality it is pretty large. There is a way to go up and to observe it from above.
When it is windy (as often the case in Iceland) you can get wet. Be ready for that and put on some waterproof clothes.
There are always some tourists with drones around Skógafoss trying to capture it from unexpected angles.
Skógafoss is not far from road 1, which means that you can easily reach it. There is a parking place in the neighbourhood.