Submarine Found In Dried Up River, Then They Look Inside

For a reason

“Help me,” he grunted toward the others, and Kevin came to support him. Together, they managed to get the door to move a little. The trio shared an excited look. This door must be so heavy for a reason. Kevin and Carl took a deep breath and pulled with all their might, and the door creaked open. Their eyes grew wide in amazement when they set foot inside the room.