 Colombia's Pacific coastline, where muddy rivers loop into the ocean, has long been a smugglers' paradise.Behind the jagged cliffs that jut into the ocean is a vast jungle, laced with mangrove-fringed coves and thousands of miles of waterways, easy to use as clandestine shipyards.A Colombian Navy Commander stated that it is most striking to notice the logistical capacity required of these criminals in order to take all the material into the heart of the jungle, including heavy equipment such as propulsion gear and generators.