Complex sentence: Francis Drake and Olivier van Noort are known to have used the island as a supply base, Drake visiting it during his circumnavigation of the globe and being seriously hurt by hostile Mapuches that inhabited the island.
Split into simpler sentences: Francis Drake and Olivier van Noort are known to have used the island as a supply base. When Drake was visiting it during his circumnavigation of the globe he was seriously hurt by hostile Mapuches that inhabited the island.