Bring the Land Rover to a halt in the room with the large square block in the middle. Ignore the waiting truck for now and make sure there's enough space for Lara to exit and enter the Land Rover without getting stuck. Have a prowl around the room and pick up a large medikit and 2 boxes of wideshot shotgun shells. Climb back aboard the Land Rover and follow the escaping truck out into the open desert.

You just have time to admire the huge statues on your right before driving through another archway into a walled zone with a guy on a scaffold shooting at you. Don't pause to look at him too long - just drive straight through the scaffold poles holding him up and then reverse over him to finish the job.

Exit the Land Rover and check out the deep pit over the sand dune - lucky you missed that! While you're on foot, head into the corner to the right of the exit archway and locate a crawlspace. Crawl in for Secret #1 - a large medikit. Return to the Land Rover and enter the next area.

Drive across the open area and turn left between the walls. Another sniper opens up on you, so drive through the poles holding his scaffold up - on the left - and then reverse over him once he's pitched to the ground. Now exit the Land Rover again and climb up the scaffolding on the opposite side of the road (in the middle, where there's a missing section of railing). Head to the right and around the corner then over the block to surprise a goon coming the other way.

After he's dealt with, drop down the hole in the scaffold floor just ahead for Secret #2: Run back the way you just came (but underneath the scaffold now) to the end of the long wall. Pick up the large medikit and return to the higher level of the scaffold. Run around the corner and again head to the end of the scaffold to pick up some shotgun shells (above where you found the medikit just now). Return to the corner and climb up to the top level of the scaffold.

Head to the middle of the long wall and pick up the large medikit from the alcove on the right. Now turn around and note the rope hanging between the walls. Take a long running jump towards it and grab hold. Start swinging towards the opposite side and jump off the rope when you're over the opposite scaffold. Head right for the switch you can see, high on the wall near the end of the wall. Stand under the switch and leap for it, grabbing hold and letting Lara's weight pull it down. The gate at ground level opens...

Return to the Land Rover, drive it through the gate and park up again. Two of the four alcoves in front of you have goodies in. To the right of the opening there are some Uzi clips and to the left there's a large medikit. Having plundered the alcoves, return to the LAnd Rover and gun it through the opening and up a slope.

Watch out for the spiked balls! There's three in total - either dodge them or duck and hope the Land Rover saves your skin (likely it will!). At the top of the slope, stop the car and heal any damage. Now get out and walk back down the slope to the hole in the ceiling that the last spiked ball came from. There's a climbable wall at the back of this, so mjump up and grab it, climb about halfway up and then backflip to a ledge behind you for Secret #3 - grenades. Safety drop back to the slope from the secret ledge.

If you overshoot the top of the slope you can return to the Secret by taking standing jumps up the sandy slope on the other side. From the top of the sandy slope, drive carefully down it and turn right at the bottom. Avoid the deep spike pit to your right and pull up when you get to the second, L-shaped pit. Exit the Land Rover and go to the far side of this pit, where there's a climbable wall. Climb down and, near the bottom, around the opening to a crawlspace. Crawl in (you'll have to do the 'let go and grab/crawl' manouevre here again) for Secret #4 - wideshot shells and arrows.

Return to the Land Rover and drive on, avoiding the spike pits. Just before you come to the end of the valley, there's anm opening to the left (just beyond a rock bridge) leading to the open desert. Floor the accelerator and head straight over the dunes, taking care at the top of each to come down without crashing into the spike pits that are still around.