On the evening of June 21st, a middle-aged man heading south in his Ford pickup on Old Spanish Trail, a two-lane road adjacent to and partially within the parkâs boundary, lost control of the truck about a mile-and-a-half south of the parkâs entrance and went off the road. The pickup rolled over, causing extensive damage to the cab and killing the driver. The driverâs name is not yet known. Speed was a contributing factor. The Pima County Sheriffâs Department is conducting the investigation.