Mud bath in St. Lucia's volcanic sulphur springs excursion

Will be taking a cruise to St. Lucia in December and looking for a tour that visits the mud bath in St. Lucia's volcanic sulphur springs. Can anyone recommend a great tour?

serenity private couples tour -- can do a mud bath -- but only on the private tour

thanks! do you know of any group tours that do the mud bath?

FYI: Don't do if you're allergic to sulphur drugs.......also FYI: very smelly (like rotten eggs).

Cosol will take you there.....the tour we took with him went right past the mud baths, but my husband is allergic to surphur drugs so we didn't stop. You're close to the drive in volcano too.....so stop there to say you've been in a volcano.