Harrat Rahat volcano took place in the western side of Saudi Arabia. This volcanic field is considered to be the biggest lava volcano in the country. It was an explosive volcano because when the explosion took place ash, magma and gases were released into the atmosphere and the surrounding land. The Harrat Rahat is made up of lava that covers an approximate area of 20,000 sq. km. It is actually twice the size of Lebanon. The last explosion of the Harrat Rahat happened in 1256 AD. This volcanic field is historic as it is the first among many that has recorded accounts. Harrat Rahat also made history because it happened a few kilometers away from the tomb of a holy prophet and coincidentally some minutes after prayers from the people of the holy city. The explosion threatened the nearby holy city because the lava flow continued to stretch for fifty-two days. The volcano lies in Madinah because that was where the explosion took place.
From the look of the area it is evident that past explosions occurred. The quality of water in the area is bad. This must be an effect from the chemical materials that flowed into the water bodies after the explosion. A guest is advised to bring water if they are visiting the area. The by-products of the lava like salt and silt can be seen in some parts of the volcanic site. The area also has a number of scoria, tuff cones and spatter which back up the possibility of past explosions having taken place. The presence of craters is strong evidence that a volcanic explosion took place at the area. With such kind of an explosion the most expected hazards include the destruction of crop and any other vegetation, shortened periods of rains and contaminated water surfaces. People living around the area are likely to suffer skin infections and respiratory complications from the substances released in the atmosphere. It is possible for the Harrat Rahat to erupt again because it is still an active volcano.
https://defence.pk/pdf/threads/the-story-of-the-famous-volcano-in-saudi-arabia-near-the-prophets-saws-mosque.498804/page-2
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