Halloween Hike Calendar Add to Calendar Add to Timely Calendar Add to Google Add to Outlook Add to Apple Calendar Add to other calendar Export to XML When: October 31, 2021 all-day 2021-10-31T00:00:00-05:00 2021-11-01T00:00:00-05:00 Contact: Fort Abraham Lincoln State Park Event website City of Mandan General Community Morton County This is a bonus hike in the 2021 12 Months 12 Hikes Challenge