Complex sentence: He drove closer to the object, parked it at the edge of the arroyo, less than 30 meters (100 feet) from the craft, then got out of the car for a closer look.
Split into simpler sentences: He drove closer to the object and parked at the edge of the arroyo, less than 30 meters (100 feet) from the craft. He then got out of the car for a closer look.