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Sinkholes may capture surface drainage from running or standing water, but may also form in high and dry places in specific locations.

The formation of sinkholes involves natural processes of erosion[7] or gradual removal of slightly soluble bedrock (such as limestone) by percolating water, the collapse of a cave roof, or a lowering of the water table. Sinkholes often form through the process of suffosion. Thus, for example, groundwater may dissolve the carbonate cement holding the sandstone particles together and then carry away the lax particles, gradually forming a void.

Occasionally a sinkhole may exhibit a visible opening into a cave below. In the case of exceptionally large sinkholes, such as the Minyé sinkhole in Papua New Guinea or Cedar Sink at Mammoth Cave National Park in Kentucky, an underground stream or river may be visible across its bottom flowing from one side to the other.

Sinkholes are common where the rock below the land surface is limestone or other carbonate rocksalt beds, or in other rocks, such as gypsum,[8] that can be dissolved naturally by circulating ground water. Sinkholes also occur in sandstone and quartzite terrains.

As the rock dissolves, spaces and caverns develop underground. These sinkholes can be dramatic, because the surface land usually stays intact until there is not enough support. Then, a sudden collapse of the land surface can occur.

090622-deadsea-sinkhole-hmed-345a.grid-6x2image from NBC 

There are videos from Israel, it about flood and draining sinkhole dynamics.

The initial setup location and view angle

image[5]

The Geographical conditions,

image5[3]

Video link: http://youtu.be/Qj4lFZbd2J4

Video 2: 

The initial setup location and view angle

Sinkhole record 3Mar05

The Geographical conditions,  Sinkhole record 1Mar05

The final location and view angleSinkhole record 2Mar05

Video link:http://youtu.be/J3kkYWkq_M0 

The video is part of The Geological Survey of Israel research project-  Sinkholes and morphological changes in the Zeelim Fan. Photographed and edited by Elad Dente.

The Brinno time-lapse Camera will record for months on its 4 AA batteries, while saving your Time Lapse Video to the SD Card. No stitching thousands of frames together in post processing. Anyone can now create High Definition Time Lapse Videos, any time, any place 

operation

for more informations, please visit www.brinno.com. or join Brinno Facebook https://www.facebook.com/Brinno.EN?ref=hl

Where to buy

Israel

Egypt

Al Tawakol Electrical Co. (Gila)

AL TAWAKOL ELECTRICAL CO. (GILA)

Iraq

Al Qundus Trading Co. Ltd.

AL QUNDUS TRADING CO. LTD.

Jordan

Abushaqdam for Security Doors

ABUSHAQDAM FOR SECURITY DOORS

Kuwait

X-cite by Alghanim Electronics

X-CITE BY ALGHANIM ELECTRONICS

South Africa

Frontier Electronics

FRONTIER ELECTRONICS


United Arab Emirates

Maxcom Technologies

MAXCOM TECHNOLOGIES

Morocco

MELINT SARL

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