 The geographic context of Las Mercedes-1, located between streams and rivers on all sides, has raised the question of whether the sphere of influence of a chiefly political center might be bounded by hydrographic systems.It might have been that these surrounding hydrographic systems served defensive functions as naturally existing barriers.The Pocora Causeways does not communicate directly with another archaeological site, but is aiming towards Williamsburg (L-58Wb) 3.5 km to the southeast of Las Mercedes-1.