<img src="http://2.bp.blogspot.com/-EeYtSbpCKz4/XEFLzCWc-LI/AAAAAAAAFsY/EEp2F1rwJsgPRgvq4gMx1UxoO_kWwdMJACLcBGAs/s1600/15477811750.jpg" alt="" filesize="4108858"><div><br></div> <div><br></div> <div><img src="http://1.bp.blogspot.com/-b1SBU0rgruo/XEFLzPBY24I/AAAAAAAAFsc/ScT6krvOGF8w0Snqx-OdrZ__L84YpghlwCLcBGAs/s1600/15477811751.jpg" alt="" filesize="5738736"></div> <div><br></div> <div><br></div> <div><img src="http://2.bp.blogspot.com/-KdHdSVck3hI/XEFLzOJRn9I/AAAAAAAAFsg/OFnn9hzwDp8rWQCO7OgYXX8rVnXBtYXuACLcBGAs/s1600/15477811752.jpg" alt="" filesize="5181507"></div> <div><br></div> <div><br></div> <div><div>표면이 살짝 얼어붙은 강에서 물의 소용돌이 현상으로 얼음이 회전하며 주변부가 얼어버림</div> <div><br></div> <div>이게 계속 돌면서 점점 커김</div> <div><br></div> <div>그래서 지름 90m 의 거대한 원형 얼음이 만들어짐</div></div> <div><br></div>