Explorer David Livingstone is credited with discovering the Victoria Falls in Zimbabwe. Despite the multitude of accounts and documentation of the locals' Mosi-oa-Tunya (the smoke that thunders) prior to his arrival. But hey, according to history it seems the locals had never encountered a waterfall a mile wide and hundreds of meters deep whose plunge creates a mini eternal rainforest in the area and the plunge can be heard from a distance away out of sight of the falls themselves.
But yes, it was David Livingstone who "discovered" the falls. Oh, did I mention that from his own account, he was escorted by locals to the falls?