NORFOLK, Neb. (AP) — The family and friends of a Nebraska man who has been missing since July in Badlands National Park in southwestern South Dakota hope he will be found.

39-year-old Joshua Jacobsen’s loved ones are trying to remain optimistic, but it is unlikely he will be found alive.

Jacobsen is believed to have entered the park on July 12, and his vehicle was found in campground, on July 17. Authorities called off the search for him in early August.

Christine Jacobsen-Bucy says it’s hard to remain positive about her son’s disappearance.

Jacobsen had moved to Laurel, Nebraska, about a month before his disappearance to take a chef’s job at a new restaurant there.