Geological Oddities in Vietnam

Deep within the mountains, a towering natural wall of tightly packed basalt columns mimics a colossal ancient fortress built by no human hands.

Hidden within the mountains of Vinh Son, this geological marvel features a roaring waterfall cascading over a massive, million-year-old basalt cliff shaped like a giant upside-down stone honeycomb.

A mysterious submerged wall stretches from the coast of Nhon Hai toward Hon Kho Island, emerging from the sea only twice a month.

This striking landscape in northern Vietnam contains both geological and archaeological wonders.

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

This whimsically named Vietnamese stream is closer to a walkway than a waterway.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.