Springtime at Daffodil Hill. Photo © Brandon Bourdages/123rf.

Visiting Volcano, California

Little Volcano is an often-overlooked town in the Shenandoah Valley. While it has its own share of wineries, the real draws are the stunning Black Chasm Caverns–inspiration for the atmosphere in the film The Matrix–spring on Daffodil Hill, which explodes each March into a profusion of sunny yellow, and hotels with vintage Gold Country charm.

Along the road to Lanquin. Photo © Al Argueta.

Outdoor Recreation in Lanquín, Guatemala

Lanquín and its caves are quickly becoming requisite stops for travelers making their way through Guatemala. Recreational opportunities abound, and you may find yourself spending more time here than you had originally planned. Whether it’s exploring caves, white-water rafting, river tubing, or swimming that suits your fancy, you’ll find plenty to see and do in these parts.

Mouth of Las Cavernas del Rio Camuy. Photo © Suzanne Van Atten.

Exploring Las Cavernas del Río Camuy

Puerto Rico is home to one of the largest underground river-cave systems in the world, and the easiest way to explore the island’s subterranean world is at Las Cavernas del Río Camuy. The park is a well-maintained, tightly run ship, and it’s a good thing; this place draws major crowds.

Lake Shasta. Photo © Maislam/Dreamstime.

What to See at Shasta Lake

Shasta Lake doesn’t look like most lakes. Rather than a bowl shape, the lake is fed by three major rivers; to create this sprawling artificial lake, five towns were drowned. The remains are still down there, most sunk so deep that even scuba divers cannot explore them. A tour of the amazing Lake Shasta Caverns is a welcome respite from summer heat, and even if you’re not fascinated by engineering statistics and superlatives, a tour of the Shasta Dam is a great experience.

Paradise Cave is one of the few sights in the park that can be visited independently. Photo © Dana Filek-Gibson.

The Caves of Phong Nha-Ke Bang National Park

A labyrinth of subterranean tunnels and jaw-dropping, otherworldly landscapes, Phong Nha-Ke Bang National Park may be off the beaten path for now, but its anonymity is fading fast. Decked out in eerie, alien rock formations and spindly stalactites, these tunnels are estimated at around 3-5 million years old. Here you’ll find the world’s largest cave, home to a thunderous river, clouds, and an entire jungle ecosystem.

Inside the Dau Go Cave in Ha Long Bay. Photo © Nikolay Grachev/123rf.

Visiting Ha Long Bay’s Caves

Ha Long Bay is home to caves, islands, a few small beaches, and sleepy fishing villages. Since the bay is accessible only by boat tour, you’ll have little to no control of which sights you see once you’ve booked your trip. Here’s an overview of the caves visited on tours to ensure your trip includes those you’re most interested in.