Are you talking about the attachment point for a shoulder rest?

Burning Man may be the epitome of the many optimistic and maybe naive qualities of the 90s that were co-opted and exploited in the early 2000s, and turned into the very things they were built to protest against - another being the free and open internet

Tl;dr can I park my van in front of this Singaporean prison and for how long until I attract attention?