Experts say newly found karst cave has sediment ‘gene pool’ that hasn’t been seen before, but it needs to be protected before ...

Join us for the most amazing Rock and Gem Show. We will feature a vendor scavenger hunt, Crystal Easter Baskets, Crystal filled Easter eggs, vendors, a kids activity corner, and enjoy an ...

Navigate the array of narrow tunnels, slippery rocks and flooded spots, and you'll be rewarded with a captivating show ... As well as a pretty posh name, the cave boasts a colourful array of calcite ...

The cave system reopens on May 23. Visit the Sequoia Parks Conservancy website to get tickets for the tour. You can visit from May 23 through September 7, 2025. The tour times are between 9am and 3pm.

The caverns also feature intriguing rock formations and narrow passageways ... renowned for its dazzling calcite crystals and vast underground passages. With over 200 miles of explored passages ...

Found in the Black Hills of South Dakota, this cave system offers guided tours through rooms sparkling with calcite crystals and delicate ... corridors and striking rock formations are a testament ...

Furthermore, there are marbles that consist mainly of calcite (up to 90%), ruby, mica (phlogopite and fuchsite ... To prepare the sample wafers, the authors cut a section of rock containing ruby and ...