Deriner Dam seen from the upstream right Bank on 20 Novmber 2011

Deriner Dam Gallery G7 Left Balcony on 19 May 2012 with upstream Water Level at 239.88 masl

Deriner Dam Gallery G7 Center Balcony on 8 May 2012 with upstream Water Level at 241.12 masl

Deriner Dam Right Bank downstream Panorama on 22 June 2012 with almost fullest Sunshine Expose of the Year at an upstream Water Level Elevation of 264.02 masl

Into The Grave Sutri

The Well Of The Devil, Ronciglione

Grotte Del Cavallone Scalinata Cavallone Cave Stairs

Inside Cavallone Cave

Entrance Cavallone Cave

Tickner Cave [3]

Kuna Cave (interior)[1]

Gwinn Cave (interior)[3]

Deriner Diversion Tunnel with Bottom of Block of definitive Plug cleaned on 31 May 2012 with Photographer

Pink Floyd Apollo Mission

Kirillovskaja cavern - hall "The races of cockroachs"

Black Chasm Cavern in Amador County, California

Mars Panorama - InSight lander: Martian solar day 10

Hidden place near the sea

Cova de Can Marçà, Ibiza, Spain

MALAYSIA - Batu Caves 2

Surveyors Ice Cave (exterior)

Surveyors Ice Cave (interior)

Gwinn Cave (interior)[1]

Crystal Mill