Horse's head dumped at NSW Snowy Mountains National Parks Office disgusts staff

The NSW National Park and Wildlife Office in Jindabyne adjoins the Snowy Region Visitor Centre (Supplied: NSW NPWS)

Police are investigating after a man filmed himself leaving a decapitated horse head on the doorstep of the National Parks and Wildlife Service (NPWS) office in the NSW Snowy Mountains.

The video, which the ABC has chosen not to run, was posted on social media and shows the man removing the horse head from a vehicle, and dropping it in the doorway of the NPWS Jindabyne office.