As well , it's consist of limestone , sandstone , marlstone and siltstones , while the uncovered base of the mountain composed of a thin layer of marlstone topped with layer of Breccias rocks up to 17 m , followed by limestone and sandstone with thickness of 18 m , after that there is a 75 m thickness of sequential layers of grey crumbling sandstone with intermittent layers red marl and marl-alluvial , ends up with a cover of 2 m of
Ibn Al-E'erabi said " Al-Mushaqqar : a great ancient city , has a fortress in the middle , on a Qarah called Attalah and on the top of it there is a well that makw a hole of Al-Qarah until it get to the ground , so it's absorbed by the ground The mountain has caves , and some of them , such as " Al-Nashab cave " has moderate steady temperature throughout the year

جبل القارة وكهوفه

The project named " Land of Civilizations " , and the project includes preparing the main cave , lighting and leveling its ground.

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جبل قارة.. تاريخ وحكايات لأجمل المعالم السياحية في السعودية
this mountain still called " Ra'as Al-Qarah " which is meant by Arabic geographers
جبل القاره
among the most famous caves in the mountain is :• The number of this straight corridors reaches 28 with length of 1
جبل القارة وكهوفه
2- Second type is a result of collapses of the upper layers because of chemical weathering and abrasion, therefore, lower layers removal, which lead to the formation of wide caves sometimes
Naming [ ] Al-Qarah mountain named after Al-Qarah village which is belong to Um Aljamajem Caves formation [ ] there is a popular belief that the caves in the mountain formed as a result of tides , based on a study was done at 1978 , however , at 2006 other study denied this
so there is cave for the annual collective wedding , and the other for tourists 3- Third type formed because of earthquake Fissures and it is a cavernous system that takes a regular form of straight fissures , corridors like

القارة (الأحساء)

It's likely that the first inhabitants of Al-Qarah village which has the in it, is pre-Islamic tribe , they were skilled at archery so it's called " Al-Qarah " due to that , but the site landforms tells that the name is referred to "black, small, single, round and high mountain ".

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تاريخ جبل القارة في الاحساء ارض الحضارات
Journal of Cave and Karst Studies v68 : 12—21
جبل القارة
"Quaternary Period in Saudi Arabia"
جبل قارة.. صخور وكهوف وتاريخ وحكايات
the most famous cave of this type is Al-Nashab cave which has been invested by Ahsa Tourism company under the name " Land of Civilizations project in Al-Qarah mountain" Each one of the caves has natural characteristics which made the locals take advantages of it based on their usage
"The Jabal Qarah Caves of The Hofuf Area, Northeastern Saudi Arabia: A Geological Investigation" Governor Al-Qarah mountain " Jabal Al-Qarah" also known as " Al-shaba'an mountain " located between At-Tuwaitheer village and in at the Eastern Province,
It also includes museum of history of Hajer " Al Ahsa name formerly " , stepped theater , new cafes and shops " it a divine formation , and human didn't do anything about that " Al-Janbi said in his book

Al

Al-Mushaqqar also was mentioned in the fourth section of " Mou'jam Ma Esta'ajam " - it's a dictionary - for Abu Ubaid Al-Bakry.

1
جبل قارة.. تاريخ وحكايات لأجمل المعالم السياحية في السعودية
several types of the mountain's caves extend in a form of ribbed grids of cracked ground , while the others are cavities due to chemical weathering , abrasion process and collapses
Al
"The Desert Caves of Saudi Arabia: Stacey International"
جبل القاره
Geology [ ] The base area of Al-Qarah mountain is about 14 square and consists of reddish colored sedimentary rocks