The tunnels can each be from 3 to 20 feet [1 to 6 meters] in length, and the marmots navigate through these mazes with their black whiskers, called vibrissae, which are located around their muzzle.
Tunnelid on tavaliselt ühe kuni kuue meetri pikkused ning ümisejad leiavad labürindis õige tee tänu koonu ümber olevatele mustadele kompekarvadele.