Photos: Inside the majestic Lake Superior ice caves

Weather ·

1 People walk a well-beaten trail that hugs the shoreline Tuesday, Feb. 4, 2013. 
2 Justin Berke of Duluth, Minn. crawls through a small passage under built up ice. 
3 Left: Icicles descend from the ceiling of one of the ice caves. Right: People peer into the opening of an ice cave. 
4 Icicles descend from the ceiling in one of the many ice caves dotting the Apostle Islands National Lakeshore. 
5 Visitors check out one of the many ice caves. 
6 In an area of an ice cave that sees little sunlight, frost coats a wall of icicles in the early afternoon. 
7 Along with the many ice caves come giant icicles that dot the shoreline. 
8 Visitors check out one of the many ice caves at the Apostle Islands National Lakeshore. 
9 For the first time in five years, the south shore of Lake Superior has frozen enough to allow visitors to access the ice caves. 
10 The sun peaks through an opening into an ice cave. 
11 Icicles descend from the ceiling of one of the many ice caves. 
12 Accessing the ice caves requires a round-trip hike of at least two miles over a frozen Lake Superior. 
13 Icicles descend from and visitors walk by one of the many ice caves. 
14 Water dripping from icicles on the ceiling of an ice cave form waves of ice. 
15 The ice caves form on cliffs and rock formations that overlook Lake Superior. At times, pieces of the cliffside plummet to the ice below. 
16 The sun sets on the Apostle Islands National Lakeshore. 
17 This image of the sun setting on the Apostle Islands National Lakeshore was creating using High Dynamic Range (HDR) photography, which combines two images into one to try to get closer to what the human eye sees. Taken Tuesday, Feb. 4, 2013 near Cornucopia, Wis.