In the absolute silence of deep underground, Bronwyn Sell experiences true darkness - and the beauty it conceals.

Derek Cheng basks in a panoramic view that few have experienced.

With its caves, magnificent bristlecone forests and isolated star-gazing opportunities, visitors to this national park are in for a visual feast both above and below ground.

Breath-taking thrills and spills and awe-inspiring sights are on offer in the tourist mecca, writes Morgan Tait.

Home to the world's longest known cave system, Kentucky's only national park is a must-visit for keen spelunkers.

If moonbows, starry skies and volcanic activity peak your interest, head to one of the two national parks on these remote Pacific islands.

It's featured in many travellers' photos, but Donegal man Iain Miller has become the first person in 25 years to successfully scale the Dun Briste sea stack.

Can it really be called adventure travel if you're helicoptered to a luxury lodge in the middle of nowhere? Kirrily Schwarz dosen't think so.

Kim Knight felt the fear (and then walked it off) on a six-hour side-trip to Hokitika.

A blush of reds and golds in autumn, Shenandoah is equally known for its impressive wildflower displays.

From Berlin to Bordeaux, Ireland to Oregon, readers share their tips for the world's best bike rides.

Home to the tallest sand dunes in North America and the largest archeological preserve in the USA, Colorado's national parks are grand in every way.

Rock formations shaped by geological forces and erosion feature heavily in this state's red-hued national parks.

From misty valleys thick with trees to desolate, sandy heat-traps, this state's national parks have scenes to awe everybody.

The USA's northernmost state is positively heaving with spectacular wilderness areas, but you'll need to embrace a spirit of adventure to visit some of them.

This desert beauty's salt flats, sand dunes and craggy peaks are draped in colour, writes John Marshall.

Fewer people have seen inside this incredible place than have reached Everest's summit.

Chris Daniels finds 10 good reasons to do the Tongariro Crossing in winter.

Amazing footage shows the moment a Kiwi takes flight over the Swiss Alps.

Andrew Gillick tests his driving and cycling skills in Tongariro National Park.

Five reasons to visit Samoa with a teenager by Helen van Berkel.

While Uruguay doesn't have big-ticket tourist attractions like Iguazu Falls and Christ the Redeemer, it definitely deserves to be a tourist destination in its own right.

A desperate boyfriend is offering a free holiday in the Caribbean in exchange for physiotherapy for his badly injured kitesurfer girlfriend.

While everyone's heard of Yosemite and Yellowstone National Parks, the United States has even more to offer when it comes to wildlife and nature.

Patience and speed are key to photographing African wildlife, learns Sarah Marshall.

On a girls' week in Fiji, Shandelle Battersby goes on a cultural safari in Sigatoka, via jetboat.

Quiet, warm, friendly, relaxing. There's no television or wi-fi in the bures. Just the sound of blissful quiet or the soothing melody of ocean waters gently lapping.

Even being woefully underprepared for a river rafting trip didn't stop me from enjoying the five hours spent floating down the tranquil upper portion of the Navua River in Fiji.

It's Seaweek - what better excuse to get out to some of NZ's top snorkelling spots?

Julia gives the all clear and we drop over the side, following the white mooring line down to the comms tower on top of the bridge.