When Ranger Bill opens the show today, there's a strange rumbling noise in the background. I wasn't sure what it was - listen and try and decide for yourself what it is? It's kind of hard to tell. The first time Bill heard it, he couldn't believe his ears - and when he saw what was making the noise, he couldn't believe his ears - and when he saw what was making the noise he couldn't believe his eyes! Finding out what that noise was, and then trying to find out a way to stop it, gave the old geekers the highlight of their life...