Now we're officially out of the "Surface" section. We're now deep underground.
So far, I really prefer not using the Scan Pulse... for moments like these where you're stuck and have to bomb around everywhere looking for where to go... I don't want those moments to be removed from the game.
May as well backtrack around to the top path with bombs... Oh wait, can't backtrack yet... oh yeah I have to find 4 metroids to kill and go back anyway.
So many ways to go now... only 10 map pins available to use... I didn't think I'd be using these as much as I am...
... also I ran out of missiles... this is a good excuse to backtrack all the way to the beginning and get stuff that I missed.