archatlas:

Sand Tufas

You could be forgiven for thinking that the otherworldly rock formations in these pictures come from another planet, or from a sci-fi movie perhaps. But they’re actually called sand tufas and they come from right here on earth.

A tufa is a peculiar form of calcium carbonate, and they’re created when calcium-bearing freshwater springs well up through alkaline lake water (which is rich in carbonates). The carbonate and calcium combine and, over centuries, these elements form unusual spires, towering columns, and strange cauliflower-shaped mounds which can reach heights of up to nine metres (30ft). Tufas can only form underwater, and they’re only exposed when lakes are drained or dry out over many years. Check out this collection of pictures compiled by Bored Panda to see these curious formations for yourself.

Via + image credits

myhouseidea:

The Peratallada Castle is a project designed by MESURA located in the Baix Empordà (Catalonia, Spain) and considered for it’s historic-artistic value a National heritage building, preserve in its stonewalls a clear vestige of it’s medieval past. The garden project is dominated for the presence of the surrounding stones, dated from the tenth century (a.C.), with more than 1.000 years of history, we could only step back to focus the main role in the monument. Photography by Salva Lopez

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Peratallada Castle by MESURA

The Peratallada Castle is a project designed by MESURA located in the Baix Empordà (Catalonia, Spain) and considered for it’s historic-artistic value a National heritage building, preserve in its stonewalls a clear vestige of it’s medieval past.