Byrdstown – Memorial Day Hike Presented By Cordell Hull Birthplace Historic State Park starting at 9:30am-11:30am. Join interpretive Ranger Rachel for a moderate hike to the opening of Bunkum Cave this Memorial Day! This hike is roughly 2 miles round trip, and will take about an hour and a half to complete. Be sure to wear sturdy shoes and bring plenty of water. We will meet at the trailhead.