Sandhills resembling 'mini volcanoes' have popped up along a beach that staff said play a crucial role in the ocean's ecosystem. Footage of the intriguing sand mounds appeared scattered at Quintana Beach County Park, about 70 miles south of Houston. Staff shared the bizarre video Sunday morning as they explained that these miniature volcanoes were built by ghost shrimp and appeared due to the 'extremely low tide.'
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