Encore - Poetry Cave and Karst Landscape

July 01, 2017

EPOD_EncorePoetry Cave (2)

Cryptokarst (2)

Today and every Saturday Earth Science Picture of the Day invites you to rediscover favorites from the past. Saturday posts feature an EPOD that was chosen by viewers like you in our monthly Viewers' Choice polls. Join us as we look back at these intriguing and captivating images.

Photographer: Piero Armando
Summary Author: Piero Armando

June 2012 Viewer's Choice The photo at top features Poetry Cave (Grotta della Poesia) and shows the karst landscape of the Apulia region of southern Italy. Dissolution of Pleistocene carbonate (limestone or dolomite) bedrock has slowly resulted from the infiltration of surface water. Poetry Cave is a cenote that formed from the roof collapse of an underground cavern. In other places dissolution pipes have punched through a permeable layer near the surface (lower photos). Photos taken on June 23, 2008.

Photo Details: Camera Maker: Canon; Camera Model: Canon EOS 30D; Focal Length: 28-50mm; Aperture: f/16; Exposure Time: 1/400 sec; ISO equiv: 400; Software: Adobe Photoshop 7.0.