Follow the stairs to the top and stop. To your left there is a difficult to see opening in the floor. Note the bird statue in the short alcove nearby and then take a standing jump from the edge of the hole to grab the ladder on one of the walls of the pit. Climb down. At the bottom of the pit you find yourself in a large room with archways and (if you explore a bit) four exits.

There is also a very deep hole in the floor with slopes going into it from all sides. Throw a flare down it to see the effect but don't get too close! You'll be exploring all the exits in turn so it doesn't matter which you take first - we'll take the one nearest the bottom of the ladder, so hop over the ramp and go up the slight slope and along the hallway to enter a room with two levels supported by columns.

Two skeletons pop out as you enter, so take them out and then drop down to the lower level. Face into the center of the room from below the entrance and then run around to the corner on your right to find a crawlspace. This leads to Secret #1 - arrows and a small medikit. Exit the crawlspace, climb back up to the upper level and go through the door opposite the entrance.

There's a huge carved face in the wall here with a crawlspace just below it. Go through there and continue on to a room with a small pool containing a statue of Poseidon. Jump over the pool to the statue and press [action] to see Lara climb up up and place the first of the tridents on the statue. You hear water flooding out. Jump back to the main part of the room and shoot some nearby jars to obtain Uzi clips.

Now head for the room on the left with black patches on the floor. These are burners that ignite as LAra gets close, so don't! At the back of the room are a number of jars. When Lara approaches them 2 skeletons rise up behind her. Execut a quick roll and take them out with a grenade, which may break the jars in the process. Inside the jars are arrows and wideshot and regular shotgun shells. Exit the room carefully and go left to the crawlspace, which is now flooded. Swim back to the room with huge carved face and then retrace your steps back to the room with the deep pit.

You'll see that water is pouring down one side of the pit now. If you can get enough water pouring in it will actually start filling up with water, making it safe enough to jump in... Enter the room on the left. Here you'll find another huge carved face, along with two columns decorated with images of women. Stand close to the carved face, facing it and turn around - ahead in the right hand corner is a climable section of wall.

Climb up this to the room above and dismount to the left. Head towards the statue but watch out for a skeleton lurking inside the room. Deal with it in your favourite manner and then jump over the pool to the Poseidon statue and attach another trident to it, as before. More water is released. Return down the ladder to the room with the huge carved face.

As you land on the floor a white fire elemental emerges and begins to chase Lara. Run out of the room, through the archway on the right and towards the ladder that you climbed into this area down. Shin up it and backflip into the alcove behind you. Stand near the bird statue until the fire elemental self destructs. Return to the room below, where there are now two waterfalls going down the pit.

Jump the ramps near the bottom of the ladder again and continue on through the arches to the room ahead. Here you'll find a huge stone face and two tall rectangular blocks with snakes carved on them. There's a raised crawlspace in the corner to the left of the face carving but approach it very carefully as the circle below is a burner that ignites as you get close. Edge up to it from the left, with Lara's chest up against the wall and climb into the crawlspace as soon as you are able.

Blast the sleeping skeleton with a grenade and shoot the jar beyond for a small medikit. Jump over to the statue of Poseidon and attach the third trident to the top of it's staff. More water gushes out. Jump back to the main part of the room and head back to the crawlspace. As you approach another skeleton will jump out and need to be dealt with. Take great care exiting the crawlspace as the burner is still in flames below...

Return to the main room to find three waterfalls gushing into the huge hole. One to go! Head for the last exit of the room and follow the corridor to a room with another huge face in a room with a climbing pole. Climb the pole and backflip into the hallway that you climb into. Blast the sleeping skeleton with a grenade and then break the jars in the alcove on the right to find wideshot shells and arrows.

When you get near the Poseidon statue the skeleton nearby awakes and is probably best dealt with by blasting it into the pool with the shotgun. Jump over to the statue and attach the fourth trident to it in the normal way. Jump back across the pool and retrace your steps to the climbing pole. Slide down to the room below and follow the - now watery - corridor to the main room with the deep pit.

The pit should be flooded around halfway to the top and be safe to jump into now (if it isn't, return to the side rooms and finish off any skeletons you may have left standing). Jump in and swim down through the passage in the sidewall, then through a narrow opening in the bottom of that passage to a room where you can surface. Climb out and head up either set of stairs. In the room at the top there are two skeletons (one for each set of steps). Get rid of them in the normal way or (more interesting!) lure them towards the pool you climbed out of and blast them into it with the shotgun.

At the top of the stairs you come out onto a ledge above a room with four small pools and a face mosaic on the floor. Jump down - but when you hit the floor 2 white fire elements will appear. Shoot one of the two large jars at either side of the room to discover a magic bird statue and stand near it until both elementals have self destructed.

Push the face tile on the wall by one of the jars to open a trapdoor in the opposite alcove. Drop down through the trapdoor and follow the passageway to the Coastal Ruins level. Climb the ladder and use the crowbar to pry open the gate. You emerge on some steps above the inlet near the tide pools. After filling your lungs with good sea air, retrace your steps and from the room with the face mosaic on the floor head into the room on the right.