Small rowing boats glide between towering limestone cliffs along the Trang An river in Ninh Binh, Vietnam. The dramatic karst ...

Hidden River Cave in Horse Cave, Kentucky, is home to the world’s longest underground swinging bridge, and it’s probably the ...

Regional Foundation Specialist Implements Enhanced Geotechnical Solutions to Mitigate Subsurface Void Formation and ...

These unique areas provide a glimpse into the planet's geological history and are a must-visit for those wanting to explore beyond the usual tourist spots. From rugged terrains to unusual rock ...

Newly mapped tunnels and underground lakes make Domica Cave a must-see attraction in Slovak Karst National Park.