Where do you get the old amber checked in Pokemon Blue?

Go to Silph co. and there bis a guy who says something like "i am trying to bring back Pokemon from fossils, And its working!!!" he will then revive the fossil/old amber.that is false, where you go to revive the old amber or one of the fossils is actually on cinibar island. there is a building at the south-west end with a long hallway go down to, i think, the last door, or second to last, talk to the scientist, there's actually two, the one by the computer is the one you talk to i think.