Karst

Imaggeo on Mondays: Hole in a hole in a hole…

Olivia Trani October 29, 2018

Hole in a hole in a hole.. Credit: Djamil Al-Halbouni (distributed via imaggeo.egu.eu)

This photo, captured by drone about 80 metres above the ground, shows a nested sinkhole system in the Dead Sea. Such systems typically take form in karst areas, landscapes where soluble rock, such as limestone, dolomite or gypsum, are sculpted and perforated by dissolution and erosion. Over time, these deteriorating processes can cause the surface to crack and collapse. The olive-green hued sinkho ...[Read More]

Imaggeo on Mondays: Viñales Valley

Laura Roberts-Artal September 4, 2017

Vinales Valley . Credit: Alexis Merlaud (distributed via imaggeo.egu.eu).

From last week’s unusual desert landscape to this week’s lush valley in Cuba… The picture shows the Vinales Valley, a karstic depression with mogotes in western Cuba. Karst is the general term for landscapes formed when limestone is disolved by carbonic acid, in rain water. This leads, in particular, to the formation of an underground network of caves and rivers. In the tropics, ...[Read More]

Imaggeo on Mondays: Winter waterfalls reveal their secrets

Sara Mynott March 17, 2014

Cyril Mayaud is kicking of this week’s Imaggeo on Mondays with an insight into what waterfalls in winter can tell us about their local hydrology… The picture below shows the lower Peričnik waterfall during winter season. This cascade system is composed of two successive waterfalls that stretch some 16 metres (upper fall) and 52 metres (lower fall) high and is one of the most beautiful natur ...[Read More]