Friday, January 20, 2012

Rosh Hanikra

After descending in the cable car, the different layers of rocks making up the cliffs can be seen from below.  The cliffs are mainly made of chalk, interwoven with dark flint stones.

The cliffs are gradually being worn away by the sea.  At weak points the sea water, due to its salinity, dissolving the rock and making cracks, which widen to form sea caves (grottoes).  The salt also wears ago the surface of the cliffs by 1 mm per year.  Over the millennium the sea level has changed, it was once 6-7 metres below today’s level, then later 2-3 metres below and has also been 6-7 metres above the present level.  This has resulted in 3 different levels of grottoes.

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