After a fun week in Cartagena I rode south to Medellín. This was my first taste of the twisty congested roads that were in my future. I passed 18 wheelers, dodged smaller bikes, and discovered that the weather can change quickly in Colombia. At one point a trucks back doors flew open and two giant containers of gas and oil smashed down on the road. This shut the highway down for almost an hour as everyone scurried to figure out how to get them off the road (with a rope tied to the truck).