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Published July 29, 2012, 12:00 AM

Photo Gallery: Sea Caves of Wisconsin's South Shore


Chris Palmer, 12, of Lino Lakes, Minn., edges toward a cleft called "The Crack" during a daytrip with his family at Apostle Islands National Lakeshore on Thursday. Bob King / rking@duluthnews.com

  • Chris Palmer, 12, of Lino Lakes, Minn., edges toward a cleft called "The Crack" during a daytrip with his family at Apostle Islands National Lakeshore on Thursday. Bob King / rking@duluthnews.com
  • Lisa and Adam Gundlach of Madison, Wis., emerge from a sandstone arch at Apostle Islands National Lakeshore during a trip to the mainland sea caves. Bob King / rking@duluthnews.com
  • Paddlers on Lake Superior pass through a formation known as the Keyhole during a day trip to the mainland sea caves at Apostle Islands National Lakeshore on Thursday. Bob King / rking@duluthnews.com
  • A group of sea kayakers approach a crevice in sandstone cliffs along the mainland sea caves at Apostle Islands National Lakeshore near Cornucopia. Bob King / rking@duluthnews.com
  • Waves on Lake Superior have chewed at sandstone cliffs along the mainland, creating a variety of formations such as this sandstone spindle. Bob King / rking@duluthnews.com
  • Lisa and Adam Gundlach of Madison, Wis., and others paddle sea kayaks along sandstone formations on Thursday at Apostle Islands National Lakeshore. Waves have eroded the shoreline leaving holes, caves, arches and other formations. Bob King / rking@duluthnews.com
  • Nicole Tarcsay, a guide with Living Adventure Inc., reaches to touch the ceiling in a sea cave at Apostle Islands National Lakeshore on Thursday. Tarcsay shared her kayak with Makenna Palmer, 10, and her father Todd Palmer of Lino Lakes, Minn. Bob King / rking@duluthnews.com
  • Todd Palmer, foreground, along with his daughter Makenna, 10, and guide Nicole Tarcsay, gaze up at a layered sandstone ceiling inside a sea cave at Apostle Islands National Lakeshore near Cornucopia. Bob King / rking@duluthnews.com
  • A fanciful skull is easy to imagine in the eroded sandstone of the sea caves.  Bob King / rking@duluthnews.com
  • Paddlers admire the sandstone cliffs that lead to the sea caves along the south shore of Lake Superior in the Apostle Islands National Lakeshore. Bob King / rking@duluthnews.com
  • Lisa and Adam Gundlach of Madison, Wis. marvel at the ceiling in one of the sea caves.  Bob King / rking@duluthnews.com
  • A shallow sea cave wall with a layer of bright green fern growth. Bob King / rking@duluthnews.com
  • Kayakers emerge from the sloshy gloom of a sea cave back out onto Lake Superior. Bob King / rking@duluthnews.com
  • Paddlers use kayaks for easy access to the sea caves carved into sandstone by wave action along Lake Superior's south shore near Cornucopia. Bob King / rking@duluthnews.com
  • A large rock in a sea cave is colored a delicate green from mosses. Bob King / rking@duluthnews.com
  • A view of kayakers seen looking out from one of the sea caves in the Apostle Islands National Lakeshore. Bob King / rking@duluthnews.com
  • The Palmer family (from left) Makenna, 10, Todd, Kate and Chris, 12, enjoy a shore lunch along the beach near the sea caves along Lake Superior's south shore Thurday. Bob King / rking@duluthnews.com
  • Fossilized ripple marks from what was once a sandy beach or ancient flood plain is visible in the ceiling of one of the sea caves.  Bob King / rking@duluthnews.com
  • Sea cave guide Ben Wagner describes the history and geology of the Apostle Islands to participants on the sea cave kayaking expedition. Bob King / rking@duluthnews.com
  • Multiple layers of thinly bedded sandstone show up clearly in a cliff face along the sea cave route. Bob King / rking@duluthnews.com