Once again, the official sign for the park was out for repairs, so Teddy had to pose in front of the temporary sign in the ranger station. This is the boat that leaves from Grand Portage to Isle Royale National Park. This marks the 3rd National Park that can only be reached by boat. After my recent experience at Voyageurs National Park with mosquitos, I was nervous about coming to Isle Royale National Park. Many accounts told horrendous stories of mosquitos on the island.