Crossbowman's Tent is part of the NovtumberFest located in the eastern part of the crater. It is led by Friedrich. Shooting arrows at the target gives the player Ranged experience.
Choosing to shoot at any of the three archery targets causes the player to shoot seven times if uninterrupted. Each time grants 148.5 experience each at level 99, and takes 3.6 seconds. Full seven rounds thus takes 25.2 seconds before one has to click a target again.
There is a confirmation prompt about gaining experience before starting this activity that can be toggled off permanently.