Taxis at the bus terminal offer round trips to the surrounding sights – expect to pay around COP$25,000 to COP$30,000 per attraction including waiting time, although if you visit various sights you can negotiate a better deal. The price is per vehicle so it makes sense to get a small group together.
If you want to learn more about the attractions consider taking a tour. The standard routes offered by local operators include El Fósil, El Infiernito and Convento del Santo Ecce Homo (COP$142,000), and Ráquira and La Candelaria (COP$152,000). Prices, which include transportation, guide and insurance (but not entrance fees), are per person based on two people and drop with larger groups.