You think posh when hearing about this Five Diamond resort in Scottsdale, Arizona, but the reality is the Four Seasons Scottsdale at Troon North is a terrific base camp for hiking, mountain biking, kayaking and - of course - award-winning golf.

Even if you're not staying at this resort, there are plenty of trails for hiking and mountain biking in and around Phoenix and Scottsdale.

Photo courtesy of Four Seasons Scottsdale

We've used iTriage, one of the free smartphone apps with lots of first aid tips and videos, for quick advice on hikes and in foreign cities.  It's just one of several good smartphone apps that offer medical advice fast, plus links to find the closest doctor or emergency room.

At least one even alerts medics you're have an emergency and can't talk. Here's a selection of these apps.

Biosphere Expeditions is a volunteer wildlife conservation organization that organizes special volunteer vacations filled with adventures. Would you like to go scuba diving in Malaysia to help  protect  fragile reefs? How about tracking winter lynx, wolves and wildcats in Slovakia's Carpathian mountains? You can even try one-day "sampler" volunteer experiences with Biosphere Expedtitions.

Photo courtesy of Biosphere Expeditions

Adventure travelers who enjoy exploring the world on foot will find tempting trips at Country Walkers.  The focus is on imaginative travel with 85 itineraries around the globe.  Trips are divided into styles: Guided Adventures, Self-Guided Walking & Biking Adventures, Small Ship Cruising, and Private & Custom vacations.

You'll walk and bike on local trails, experience the regional cuisine and learn about the locale from people who live there. Country Walkers trips "capture the spirit of the land," according to the company's CEO.

Photo courtesy of Country Walkers.