Police are looking for two people who were riding dirt bikes and made obscene gestures and taunted workers last Thursday at the Galloway Nature Preserve on South Old Port Road. The bikers also rode in the workers’ direction, spraying them with rocks, dirt and debris, police said in a post on Facebook.”For the last several years, Galloway Township has been making improvements to the new Galloway Nature Preserve, located at 100 S. Old Port Road, which was formerly Ole Hansen’s gravel pit,” police said in the post.