Rincon de la Vieja National Park is located about half an hour north of Liberia, Costa Rica, in the west coast province of Guancaste. To enter the park you will have to drive down a 14 mile (!) bumpy dirt road and pay an entrance fee of $7 per person. Once you have signed in at the park station, you are free to hike the well marked trails through the tropical forest where you are able to view mud pots, waterfalls, hot springs, "volcancitos," mineral deposits- like in the photo here, and all kinds of animals & foliage.