stalactites in gyokusendo cave, 1cm per 30 years, okinawa world

stalactites in gyokusendo cave, 1cm per 30 years, okinawa world

Format JPG 300 DPI

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Author: dreamstime
License:buy for Personal Use & Commercial
File Type: JPG
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ancient cave ceilings coral earth limestone natural okinawa old rock science stalactite stalactites terrain underground yuquan