Make sure you have a good group first. Rapture is required for the harder chetari areas so get a 59 or 60 enchanter. At least have a cleric, enchanter and rogue in your group, a high level warrior or SK to taunt helps and a rogue to do the damage is almost required to keep up with respawns deeper in, disarm traps and do CR. Bards can disarm traps well too, assist with mezzing and pull with lull. Wizards or druids are nice for nuking gaters down and evaccing to the zone in and getting you across SG.
Getting to this zone will take a while, to get through SG either use in zone evacs, fight your way through or use invis after killing the seahorses (they see invis) and swim up the waterfall (takes some practise). Do not stop if anyone dies on the way through WW, make sure everyone is invis. An AE on you from a wandering dragon will drop everyones invis so make sure you travel in small groups and track KOS dragons that can see invis. The zone in is two way and safe on the DN side, so make a small CR group inside DN if anyone died on the way there and zone out to get the corpse.
Traps are one thing that makes this zone interesting, the only way to do CR here is with a rogue or a necro. Traps move and some places have multiple traps next to eachother. Traps can be dispell, damage (your eardrums explode), 10 level 50ish beetles (use either AE mez or AE stuns and point blank AE nukes - wizards or mages come in handy there). Stepping on bones can trigger a dragon construct, these see invis and are very nasty when CRing, good xp though and they drop scrolls which can be turned in at Kael for rewards. Make sure to fight these at their spawn point because if you pull them and they are low health they speed off with about 5 times sow speed to their bind point to regen. Anyways make sure your rogues and bards scan for traps continually, some things like the beetle and Dragon construct ambushes are undetectible (just dont step on the bones).
Besides the traps and dragon constructs the first floor is filled with phase spiders. These can drop nice monk armor. If they hit you they proc a short distance teleport, so hope you wont land on a trap. Get these spiders slowed as soon as you can to lessen the procs. If you fight them inside the houses and close the door they wont teleport you far. Phase spiders, Dragon constructs and beetle traps are nice xp for a good level 50ish group. Make sure you dont have werewolf form on, or use AE spells near Jaled Dar's shade as he will death touch you. He is a quest mob for the key to Sleepers Tomb, get the key to his door by killing either Zlandikar and Vaniki or Neb. Then give him one of the first brood talismans to get your key.
Go down the chetari tunnel (marked with a 1 on the map) there are several traps along the way, so make sure your rogue scans for traps and everyone stands behind him or her. At the intersection turn left. Now you will encounter an area with multiple traps next to eachother, be very careful there. At the next intersection turn left, you will see a big cave with many Chetari. Most mobs can not be snared or rooted in this zone so make sure you have enough killing power to stop them from running into others. Make sure you watch for wanderers, this dungeon has many of them and stopping to res people or such in the wrong place will get you dead quick. When you are settled with either one or 2 or even 4 groups, pull from the cave. Bards can be good pullers with lull song. Dispell all the rats, they have Sow and haste buffs and such which should be removed quickly. Follow with slow (I always tashanian first, but make sure you have good taunters) or they will eat you quick. Chelaki are not too hard to mez, Chetari however often require Rapture (even Glamour of Kintaz is too low and you might get resists). Make sure you interrupt the casting of the dustshapers near the end of the fight or they gate. Use either knockback spells or such or rapture, regular stuns do not affect 56+ creatures. Sometimes Vaniki will spawn in this area, you might need multiple groups to defeat him but he drops one of the best warrior taunt weapons, the willsapper which has a slow proc.
In the Paebela area the same applies as with the chetari, make sure you dispell sow and haste buffs right away. Some of the mice (warriors) are not mezzable even with Rapture, make sure you dispel their sow before slowing them. Amorphous masses split in smaller versions when killed, which can be mezzed. But make sure you kill them quick as they could grow. Sometimes they drop a stick with 1 charge of the 39 res, give this to your monks, SK's or necros to ease CR in some raids. There is a ledge just out of the water which might be a camp spot, but be aware that the spawn rate and amount of wanderers is insanely high. The area is relatively small compared to Chetari.
There are some good maps available by Doccus of Bristlebane, found here. The first and second level are shown on these maps.
