Welcome to Parque Nacional Cuevas de Candelaria
The caves were used by the Q'eqchi' Maya and you'll see some platforms and ladders carved into the stone.
The El Mico complex is probably the most easily accessible and spectacular of the various cave tours. Look for the sign from the highway.
A couple of kilometers west on the same highway is the turnoff to Comunidad Mucbilha'. It's 2km along a dirt road to the parking lot, then another 1km to the visitors center, where you can walk or tube through the Venado Seco cave.
Another couple of caves can be visited nearby at the Cuevas de Candelaria Camposanto.