On HorseIsle where are the big volcanos where you have to take samples out of?

As you make your way through the dragon's mazes, dig around each volcano to locate the dragon's teeth. Magenta tooth: stand on the partially broken tile to the east of the volcano and dig. Red tooth: Stand on unbroken tile at top of volcano. Blue tooth: Unbroken tile east of broken tile at top of volcano. Purple tooth: Unbroken tile one step west of broken tile on bottom of volcano. Green tooth: Unbroken tile on southern side of volcano. Cyan tooth: Unbroken tile one step west of broken tile on bottom of volcano. Yellow tooth: Unbroken tile between broken tiles south of volcano. Return with them to Xiang.