The rock of Gibraltar
The highest point of this south Europen part of the United Kingdom rises to a height of 426 meters or 1398 ft above the sea level. Rock of Gibraltar was known since ancient times. Greeks and Phoenicians marked it as a limit to the known world and after that, the rock was known to Romans as one of two Pillars of Hercules. An ancient phrase that marked two promontories that flank the entrance to the Strait of Gibraltar.
The Strait of Gibraltar on its narrowest point is 14.3 kilometers in length.
Secret tunnels
The Rock itself is a monolithic limestone formed in Early Jurassic. One of the four most know monoliths that are located on the Iberian peninsula. The Main Ridge has a sharp crest with peaks over 400 meters. Rock is also an archeological site where geologists found various marine fossils. Even though Rock is about 175–200 million years old, it’s current appearance was assembled around 5 million years ago when the African tectonic plate collided with the Eurasian plate. The eastern part of the Rock is a line of cliffs that are dropping down to sandy beaches while the western part that is looking to the city has notably less steep. Rock is also a home of more than 100 caves caused by dissolving of calcite, the mineral that makes up the limestone. One of the most popular tourist attractions.
