It protects forest remnants covering the basins of the rivers Jabonal, Ciruelas and Seco. The gumbolimbo (Bursera simarouba), May flower (Tabebuia rosea) and barrigon (Pseudobombax septenatum) are a few of the tree species found there. A few dirt roads starting at Miramar allow visitors to go a little way into this protection zone.