Junundu Burrow

Move 50% faster and hide yourself by tunneling underground. — In-game description

Junundu Burrow

Profession

Common

Bundle

Junundu Wurm

Game link

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30  

Junundu Burrow

Move 50% faster and hide yourself by tunneling underground.

 Stealth (4s): Grants stealth.

— In-game description

Junundu Burrow is a skill you get while "mounting" a junundu while Help cadets train junundu wurms and earn grade points by completing the training course event is active.

The Guild Wars Wiki has an article on Junundu Tunnel.