Stunning Caribbean beaches, mountain hikes, exploring the muddy Cocora Valley, chasing waterfalls, exploring the nightlife in the fashionable “city of eternal spring” in Medellin… Colombia’s list of attractions is a mile long, but the sheer variety of things to do and climates to experience means that deciding what to pack for Colombia can be a bit tricky. In Cartagena, it’s all about shorts, tank tops, and bathing suits. In Medellin,…