A Sikorsky S-38B amphibian named 'Marichu II', operated in connection with Urabá-Medellín-Central Airways, rests on a wet ramp in the Panama Canal Zone region during the 1930s. Renowned for its versatility on both land and water, the S-38 helped open early commercial air routes across Colombia's rugged interior and coastline, an era when amphibious aircraft were essential links between isolated river towns and the wider world. Project: 218476