David Friedman’s Reviews > Gibraltar: The History of a Fortress > Status Update

... The Med constantly evaporating because river inflow too low pulls a surface current in from the Atlantic to replenish the basin, and the higher salinity causes a subsurface current out. Caverns full of stalactites and stalagmites, terrifying to early travelers, an early sailor’s report contributing the episode of Odysseus’ visit to the dead?

Pages on the geology & oceanography in the first chapter alone were fascinating: the rock is composed of the shells of billions and billions of organisms. Neaderthal man ought to be called Gibraltar woman, the first skull having been found there....