The ice caves are spectacular this winter at Apostle Islands National Lakeshore . Hide Caption More than 120,000 people walk three miles round-trip over a frozen Lake Superior . The massive freeze , however , has created natural wonders . The caves are like `` walking into a hall of gods , '' visitor says .
The ice caves are spectacular this winter at Apostle Islands National Lakeshore . Hide Caption More than 120,000 people walk three miles round-trip over a frozen Lake Superior . The caves are like `` walking into a hall of gods , '' visitor says .