The main things on my list so far are the beautiful city of Cartagena. Spending a week or more volunteering with children in Santa Marta on the coast, and from there doing the 5-6 day trek to the Lost City. I'm thinking maybe even go see the colourful river Caño Cristales (which is further south though). I'm open to any other suggestions I'm really excited and think this country is really worth exploring.
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