 Of the 450 members of the Narvaez expedition that landed at Jungle Prada, 300 departed on a disastrous overland expedition that boasted only four survivors, including Álvar Núñez Cabeza de Vaca who wrote an account of the journey.These men would walk to the Pacific Ocean over the next eight years, becoming the first Europeans and first person of African descent -- Estevanico to cross the North American continent.The Diocese of St. Petersburg placed a marker at the Jungle Prada site, acknowledging it as the location of the first Catholic Mass in Florida.