There are two main ways to enter the island. Stop at the beach, or swim from the back of the river at both ends to the center. There is a lot of rubble on the beach. Cover the sand on the bottom of the sea and pull it between the bucket and the container. Some notable features of the area include torn metal fences and multiple signs warning players of the existence of bears.
Walking along the main road on the island, the player will eventually take the player to a crossroads. The road sign says there are three relay stations and a forest protection station. Continue to go either way, and eventually the player will be brought into the range of hostile bears.