USA/TX: Caverns of Sonora

Caverns of Sonora are truly spectacular and perhaps the most beautiful caves in the USA. The are not large or as well-known as some other caves, but they are alive and kicking with formations still growing. The amount and diversity of formations here is truly staggering, and most importantly the rare helictites here are stunning. Helictites are speleothem formations that grow in various directions rather then vertically and they are found in extreme abundance and rare purity and complexity in the Sonoran Caverns. The most famous helictite is that resembling a giant butterfly
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