Gljufrabui

Gljufrabui drops about forty metres, but almost none of it is visible from outside: the fall is inside a cleft in the cliff, and to see it you walk into the gap and up the streambed, which means wet feet in most conditions. Inside, the chamber opens out with the water coming down one wall and a boulder in the middle that people climb for the view up. Spray fills the space, so cameras fog and everyone comes out damp. It stands a few minutes from Seljalandsfoss and a large share of the crowd there never walks the extra distance, which is the odd part - it is the more memorable of the two.

What you actually see

• A fall inside the rock - hidden from the outside, about forty metres.
• A wade to reach it - up the streambed through a gap in the cliff.
• A spray-filled chamber - with a boulder people climb in the middle.
• A crowd that mostly misses it - minutes from Seljalandsfoss.

When to go

May to September; the cleft is icy and hazardous in winter. An hour.

Honest expectations

You will get wet - waterproof boots are the difference between enjoying this and enduring it. The chamber is small and queues form in the middle of the day. Rocks are slick and the boulder is a genuine fall risk. Parking is charged at the neighbouring site.

Nearby

Seljalandsfoss is a few minutes south; Eyjafjallajokull rises behind.