 However, only Las Mercedes-1 has been extensively studied.Recent excavations at Las Mercedes-1 (L-289 LM-1) have revealed that it has an area of 5 hectares and consists of 7 platforms, 2 plazas, 6 retaining walls or terraces, 7 walls, 4 funerary areas, 1 ramp, and is where the 2 roads converge.Investigations in this part of the site have determined that the site was occupied from circa 1500 BC to circa AD 1500 and that monumental architecture began being constructed around AD 1000.