The Rock of Gibraltar (sometimes called the Pillar of Hercules or by its Latin
name, Calpe[1]) is a monolithic limestone promontory located
in Gibraltar, off the southwestern tip of Europe on the
Iberian Peninsula.[2] It is 426 metres (1,396 feet) high. The Rock is Crown property of the United Kingdom, and borders Spain. The sovereignty of Gibraltar was
transferred to the Kingdom of Great Britain by the Treaty of Utrecht in 1713 after the War of the Spanish
Succession.[3] Most of the Rock's upper area is
covered by a nature reserve, which is home to around 250 Barbary Macaques,
commonly known as 'apes'; they are the only wild monkeys found in Europe. These macaques, as well as a labyrinthine network of
tunnels, attract a large number of tourists each year.
In ancient times the Rock of Gibraltar was one of the Pillars of Hercules and was
known to the Greeks as Mons Calpe, the other pillar being Mons Abyla on the African side of the Strait. The Rock of
Gibraltar marked the limit to the known world and to pass beyond it was to sail to certain destruction over the bottomless
waterfall at the edge of the world.[4]
Geology
The Rock of Gibraltar is a monolithic limestone
promontory ( 36°08′43″N, 05°20′35″W). The geological
formation was created when the African tectonic plate collided tightly with Europe. The
Mediterranean became a lake that, in the course of time, dried up during the Messinian salinity crisis. The Atlantic Ocean broke
through the Strait of Gibraltar, and the resultant flooding created the
Mediterranean Sea.
Today, the Rock of Gibraltar forms a peninsula jutting out into the Strait of
Gibraltar from the southern coast of Spain. The Rock's highest point stands 426 metres
(1396 feet) above the strait. Its east face forms a very impressive near-cliff, while its west slope is relatively gentle.
Calcite, the mineral which makes up limestone, dissolves
slowly in rainwater. Over time, this process can form caves. Since the Rock of Gibraltar is made of limestone, it is not
surprising that it contains a number of caves. St. Michael's Cave, located halfway up
the western slope of the Rock, is a popular tourist attraction.
Gorham's Cave is located near sea level on the steep eastern face of the Rock. It is
noteworthy because archaeological excavations in the cave have found evidence that Neanderthals used it as far back as 30,000 years ago. It is especially significant because plant and animal
remains found in the cave (and others nearby) indicate that the Neanderthals had a highly varied diet.[5]
A panoramic view from the top of the Rock of Gibraltar looking north
Fortification
The Moorish Castle
-
The Moorish Castle is a relic of the Moorish occupation of Gibraltar, which lasted for 750
years. It was built in the year A.D. 711, when Tariq ibn-Ziyad, the Berber chieftain first landed on the Rock which still bears his name.
The principal building which remains is the Tower of Homage, a massive building of brick and very hard concrete called
tapia, the upper part of which housed the living apartments and Moorish bath of the former occupants.
The Galleries
The Rock of Gibraltar's North Front cliff face from Bayside, c.1810
The unique feature which is always associated with the Rock is the system of underground passages known as Galleries.
The first of these was dug out towards the end of the four years’ siege which
lasted from 1779-1783. General Elliot, afterwards
Lord Heathfield, who commanded the garrison throughout the siege, was anxious to bring
flanking fire on the Spanish batteries in the plain below the North face of the Rock. On the
suggestion of Sergeant Ince of the Royal Engineers a tunnel was bored from a point above Willis’s Battery to communicate with the
Notch, a natural projection from the North face on which it was proposed to mount a battery. There was no intention at first of
making embrasures in this tunnel, but an opening was found necessary for ventilation, and as soon as it had been made a gun was
mounted in it. By the end of the siege, six such embrasures had been constructed, in which four guns were mounted.
The Galleries, which are shown to visitors, were a later development of the same idea and were finished in 1797. They consist
of a whole system of halls, embrasures, and passages, of a total length of nearly 1000 feet, and from them may be seen a series
of unique views of the Bay of Gibraltar, the isthmus, and Spain.
The Second World War onwards
- See also: Military
history of Gibraltar during World War II
When World War II broke out in 1939, the civilian population was evacuated to the
United Kingdom, Jamaica, and Madeira so that Gibraltar could be fortified against the possibility of a German attack. By 1942 there were over
30,000 British soldiers, sailors, and airmen on the Rock. The tunnel system was expanded and the Rock became a keystone in the
defense of shipping routes to the Mediterranean.
In February 1997, it was revealed the British had a secret plan called Operation Tracer to conceal service men in tunnels beneath the Rock in
case it was captured by the Germans during World War II. The team in the rock would have
radio equipment to monitor enemy movements. The team of six was sent to Gibraltar where they waited under cover for two and half
years. The Germans never got close to capturing the rock, so the men were never sealed inside, and they were disbanded to resume
civilian life when the war ended.
Invincibility
Despite long sieges it seemed that there was nothing that could destroy the Rock or its people. This history has inspired the
simile "solid as the Rock of Gibraltar", which is used to describe a person or situation that
cannot be overcome and does not fail. The motto of the Royal Gibraltar Regiment
and even Gibraltar itself, Nulli Expugnabilis Hosti (Latin for "Conquerable by No Enemy"), reflects this invincibility. The Rock of Gibraltar is also used in the
corporate logo of Prudential Financial.[6]
Upper Rock Nature Reserve
- See also: Gibraltar Barbary
Macaques
The flora and fauna of the Upper Rock Nature Reserve are of conservation interest. Within it is a range of animals and plants,
but the highlights are the Barbary Macaques (the famous 'Rock Apes'), the
Barbary Partridges, and flowers such as Gibraltar's own Chickweed, Thyme and the Gibraltar
Candytuft.[7]
Ornithology
- See also: List of birds of
Gibraltar and List of mammals in Gibraltar
The Rock of Gibraltar, at the head of the Strait, is a prominent headland, which
accumulates migrating birds during the passage periods. The vegetation on the Rock, unique in southern Iberia, provides a temporary home for many species of migratory birds that stop to rest and feed
before continuing migration for their crossing over the desert and sea. In spring they return to replenish before continuing
their journeys to Western Europe, journeys which may take them as far as Greenland or Russia.[8]
See also
Notes
References
- (1931) "Gibraltar". Gibraltar: The Travel Key to the Mediterranean: 5-12. Retrieved on
2007-05-22.
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