A group of kayakers prepared to explore the mainland sea caves on Lake Superior near Bayfield, Wisc. on Sunday, July 11, 2021. (Dan Williamson / dwilliamson@duluthnews.com)
A group of kayakers prepared to explore the mainland sea caves on Lake Superior near Bayfield, Wisc. on Sunday, July 11, 2021. (Dan Williamson / dwilliamson@duluthnews.com)

Passengers in a boat at rest observe the the mainland sea caves on Lake Superior near Bayfield, Wisc. on Sunday, July 11, 2021. (Dan Williamson / dwilliamson@duluthnews.com)
Passengers in a boat at rest observe the the mainland sea caves on Lake Superior near Bayfield, Wisc. on Sunday, July 11, 2021. (Dan Williamson / dwilliamson@duluthnews.com)

The Raspberry Island Lighthouse was built in 1862 and is located on the southern part of the Island and marks the west channel of the Apostle Islands in Lake Superior in Bayfield County, Wisc. (Dan Williamson / dwilliamson@duluthnews.com)
The Raspberry Island Lighthouse was built in 1862 and is located on the southern part of the Island and marks the west channel of the Apostle Islands in Lake Superior in Bayfield County, Wisc. (Dan Williamson / dwilliamson@duluthnews.com)

The Sand Island Lighthouse is located at the northern tip of Sand Island on Lake Superior in Bayfield County, Wisc. The light was first lit in 1881. (Dan Williamson / dwilliamson@duluthnews.com)
The Sand Island Lighthouse is located at the northern tip of Sand Island on Lake Superior in Bayfield County, Wisc. The light was first lit in 1881. (Dan Williamson / dwilliamson@duluthnews.com)

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Passengers waited in line on the Bayfield City Dock on Tuesday, July 27,2021 to board the Archipelago for the sea caves and lighthouses boat tour through Apostle Island Cruises. (Dan Williamson / dwilliamson@duluthnews.com)
Passengers waited in line on the Bayfield City Dock on Tuesday, July 27,2021 to board the Archipelago for the sea caves and lighthouses boat tour through Apostle Island Cruises. (Dan Williamson / dwilliamson@duluthnews.com)

Captain Mike Garnich, 56, on the deck of the Superior Princess after completing a tour on Tuesday, July 27, 2021 with Apostle Island Cruises in Bayfield, Wisc. (Dan Williamson / dwilliamson@duluthnews.com)
Captain Mike Garnich, 56, on the deck of the Superior Princess after completing a tour on Tuesday, July 27, 2021 with Apostle Island Cruises in Bayfield, Wisc. (Dan Williamson / dwilliamson@duluthnews.com)

Archipelago is a 65-foot two-deck vessel with Apostle Islands Cruises in Bayfield, Wisc. It was first used by the company in 2018 and has a capacity of 150 passengers. It features an open upper deck, a heated cabin, large windows and handicapped-accessible facilities. (Dan Williamson / dwilliamson@duluthnews.com)
Archipelago is a 65-foot two-deck vessel with Apostle Islands Cruises in Bayfield, Wisc. It was first used by the company in 2018 and has a capacity of 150 passengers. It features an open upper deck, a heated cabin, large windows and handicapped-accessible facilities. (Dan Williamson / dwilliamson@duluthnews.com)