Answer : Dos actividades al aire libre que pueden hacer los visitantes en el Parque Nacional Tayrona son nadar y tomar el sol.
Translation : Two outdoor activities that visitors may do in Tayrona National Park are swimming and sunbathing.
Explanation : The Tayrona National Park is a protected area in the Colombian northern, which borders on the Caribbean Sea, so you can swim in the Caribbean Sea and sunbathe on the beaches.