Today our captain took National Geographic Endurance farther south than ever before–to Sims Island and the Stange Ice Shelf (73°16'57" S 78°32'15" W). Remarkably, the island was four nautical miles farther north than the Admiralty charts indicated, giving us a sense of how poorly known this area is. We are among the very few humans who have ever stepped foot on this island, which is believed to be the most southerly point on the planet where plants and bryophytes can grow. A truly adventurous expedition day!