Stalagmites and stalactites

Calcium carbonate is the principal mineral component of limestone. Its chemical and physical properties lie behind the modern-day uses of...

Andesite is a type of rock that is thought to form on the edge of tectonic plates in a subduction...

Stalactites and stalagmites are geological formations that occur when water dissolves limestone and other minerals. The mineral-rich water seeps through...

Aotearoa New Zealand’s limestone caves are special places. To many Māori, they are tapu. To explorers and thrill seekers, they...