The mission is to locate a wallet-sized piece of wood hidden somewhere on the surface of the Earth. It was placed in its hiding spot by two adventurers who rappel the world’s highest waterfalls and hike into erupting volcanoes for fun. Sorry, escape-room and geocache aficionados, this one may be over your head. U.K.-based high-tech… https://www.adweek.com/creativity/hidden-somewhere-on-earth-this-card-will-give-the-finder-free-sports-gear-for-life/