If you press the "down" arrow momentarily, the simulator will "look down" at the ground for a moment, before looking back up at the plane. By "looking down" at the correct time, you will find the end of the runway, and you will eventually recognize that a "certain ridge on the far mountain range" aligns with the south end of the runway, while "that grove of yellowish trees" is nearly in line with the north end of the runway. Every flying field has its own visual clues, you just need to learn to recognize them.