Simultaneously multiple expeditions and reconnaissance trips were launched. The first mainland explorations were followed by a phase of inland expeditions and conquest. These journeys also paved the way for the "lightweight"-style small expeditions that followed. Khan claimed that these were for hunting and camping expeditions. Byrd used New Zealand as his departure point for several of his Antarctic expeditions. This scenario provided an opportunity for naval expeditions and reconnaissance throughout the region. Ross Island was the base for many of the early expeditions to Antarctica. Explorer Henry Costin accompanied Fawcett on five of his previous expeditions. Passes traditionally were places for trade routes, communications, cultural exchange, military expeditions etc. Many European expeditions to plot the river were unsuccessful. The numerous expeditions of Ethiopian forces stopped colonial expansion. Tromelin has facilities for scientific expeditions and a weather station. Hedin prepared a scientific publication for each of his expeditions. He participated in expeditions, forums and events on climate. The Cape government responded with several military expeditions.