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So, when we think of evolution, we tend to think of the animal kingdom, but the Galapagos also reveal a slower kind of evolution, the gradual transformation of barren volcanic rock to rich rainforest. Look how it all starts in these islands, which, like Hawaii, are the result of a hotspot, a leaky hole in the Earth's crust far below the surface of the sea. Lava oozes out of the hole and over the millennia forms massive mountains The tips gradually emerge from the sea to become islands, the Galapagos Islands.
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As eons pass, sea life washes up onto the lava shelfs to die and decompose, adding nutrients to the soil.
As the lava slowly breaks down to a sandy substance, the little, silvery whiskbrooms of tiquilia arrive.
Color arrives as soil is enriched by the decay of pioneer plants, animal matter and the like. The era of grasses dawns, along with thorny shrublets and mats of sesuvium, a succulent that turns fiery colors in the dry season. Land iguanas love to prowl through this stuff.
These amazing creatures look utterly prehistoric and exhibit amazing diversity, lumbering past in a paintbox set of hues comprised of yellows, reds, and oranges.
Trees rise. The Galapagos are parched during the dry season, when trees such as palo santo, the holy stick, drop their leaves. It leafs out and blooms around Christmas, with the return of the rains, Palo santo is related to frankincense, and its sap contains an aromatic resin burned in mainland Ecuador's churches as incense.
Along with the trees, a variety of cacti begin to reach for the sky.
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Life begets life. At some point, the diversity of plant and animal species increases and, as if through some synergistic magic, increases yet again. The older islands are actually quite green and diverse, while newer bits of land are still baked lava crust supporting a paucity of species. For most of the birds for which the Galapagos are so famed, and for many of the other critters, the islands aren't much more than a place to nest and take a rest--all their food comes from the surrounding seas. At any rate some day, as here in the highlands of Santa Cruz, the islands support a rich, almost rainforest abundance of life. Thus, a new Eden is born.