The Radar: Iceland for Locals, Thailand Underwater, Do Something Crazy

• Avoid tourist traps and enjoy the local side of Reykjavik. Check out the ultimate guide to hidden gems in Iceland’s capital. [The Cultureist]
• See the vibrant colors of Thailand beneath the waves. Take a look at these fantastic underwater photos from Shark Island. [Alex in Wanderland]
• On your next trip, throw caution to the wind. Find out what you can learn by doing dangerous, stupid, and crazy things.  [Do Something Cool]

Got Radar? Follow us on Twitter @NatGeoTraveler and tag your favorite travel stories from the web #ngtradar. Check back on the blog for our roundups.

Photograph by Vinod Krishnan, My Shot