Unlike the pack members to the south, Warriors of the Clans are forbidden to go beyond their boundaries and as such, have much stricter borders than other groups. The space between te village to the south and the forest created the Southern border of the clans, while the ocean to the East and the Thunderpath and City to the West hold their own. The mountainous regions to the north of Shadowclan and Windclan are marked less steadily, though cats rarely would venture forth by themselves due to the dangers of canines or bears. At the heart of the four clans lays the Fourtrees, the meeting place once every full moon for the clans, and on the border of Shadowclan and Riverclan lies a quarry that holds the Moonstone, the physical link to their warrior ancestors. No medicine cat or leader can be denied access to the Moonstone, so this border is the most frequented.