I haven't seen a compiled list of Cavernous Maw locations yet, so I decided to start one. Here are the locations of the ones I've found.
Thanks to ImmortalAlchemist, bsphil, Chocotaku, blulight, and Dragok for leads on tracking some of these down!
Sauromugue Champaign (K-9)
On the west end of the ledge outside the Garlaige Citadel exit. You can see this one if you hug the left wall as you zone from Meriphataud Mountains.
Rolanberry Fields (H-6)
Behind a hill on the north wall of the zone, a short walk from Jeuno.
Batallia Downs (H-5)
Against the mountainside on the north side of the zone.
Pashhow Marshlands (K-8)
East of the main path near the center of the zone, just as you cross a bridge with a bend in it.
Meriphataud Mountains (K-6)
On the east side of the path heading to Zi'Tah. Just to the east of the hill in the middle of the path.
Jugner Forest (H-11)
Against the wall on the west side of the river near the south end of the zone. It's in a little nook on the right as you head south.
West Sarutabaruta (H-9)
Northwest of the fork in the path, up against the mountains. Not far from the Port Windurst zone, due west across the road from the small pond.
East Ronfaure (H-5)
In a nook on the north end of the zone. A short run northeast from the Southern San d'Oria zone, just past the Cheval River.
North Gustaberg (K-7)
A short walk northwest from the Port Bastok exit. In a nook into the east side of Zegham hill.
Those are all that I'm aware of. If you stumble across any, please let me know!
-- Nup! <(^.^)>/
Edited, Nov 20th 2007 9:24pm by Nupinu