Trekking and caving in Transylvania

This photo blog is intended for all who are interested in hiking, trekking and caving in Transylvania. You don't have to live here. Even if you will probably never hike in Transylvania, you are welcome to read my trip reports and enjoy the photos. We do have some fantastic places here in Transylvania, high mountains, canyons, waterfalls and around 12,000 caves. So, check back frecvently, as updates happen very often.

Tuesday, November 20, 2007

Spherical concretions

The spherical concretions from Feleac are sedimentary rock materials
that were cemented together to form a hard structure. The surrounding
sediments slowly erode away, exposing the concretion. They were formed
when calcium carbonate and other cementing minerals precipitated from
the ground water around an organic nucleus, like a shell. Near Feleac
we can find sphere-, and cannonball-shaped concretions.

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