When I was young, maybe 2 or 3. I owned a DVD that was about Elmo from sesame street, I'm unsure what it was about or any information on it as I only watched it once. But I remember one scene from it and I remember it vividly that Elmo had gone down this hole not sure if it was in the ground or on a wall but he found himself sliding down a very long tunnel. The tunnel in question started off like a normal tunnel, brown dirt but then when he gets a little deeper the tunnel turned into a dark scale rainbow with a touch of black but it was in a slow swirling motion, Elmo continued to laugh and fall down this tunnel. I don't know where he ended up or what even happened next but I remember this scaring the life out of me so I never watch it again. My mum got rid of the DVD when I was around 5 or 6 but that memory of that scene has still roamed my head 13 years later, I haven’t had any luck finding it on youtube so I'm hoping someone on here knows what I'm talking about or has even seen it themselves. I'm just hoping this gets found.
This scene is part of the 1999 movie The Adventures of Elmo in Grouchland. The rainbow tunnel is the portal to Grouchland which Elmo enters inside of Oscar the Grouch's trash can as he is trying to retrieve his lost blanket.