Post #747:
We had a wonderful hike in the Brohltal in the Eifel. 🥰
One of the many beautiful sights are the trass caves.
🌋 Trass, a volcanic tuff, was already mined there by the Romans. These are the deposits of a volcanic eruption that created Lake Laach around 13,000 years ago.
🏗️🏛️ Tuff is a soft rock that is primarily used as a building material on the outside of buildings or is mixed with cement.
Topic: ➟ Selfies
Details:
This post is part of the artistic performance The Happening on Instagram.
Further information about this art project Related post on InstagramCreator of this post is Frederic Hilpert
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