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| | Medina [Al Madinah, Yathrib] |
 | | Medina [Al Madinah, Yathrib] is the second most important holy city of Islam, containing the tomb of Muhammad. |
 | | The complex geology of the poorly explored portion of Saudi Arabia known as the Hejaz, north of the Islamic holy city of Medina, includes geologic forms such as lava fields and flows, intrusive and extrusive basalts, extensive faulting, volcanos, playa lakes, as well as dendritic and trellis drainage. |
 | | This is located some seven kilometers away at a chiller plant which houses the world's largest air-cooled condenser, and pumps a total of 17,000 gallons of chilled water per minute through pipes that run under the highway to the city and into the basement of the mosque. |
| www.globalsecurity.org /military/world/gulf/medina.htm (1410 words) |
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