The Trap Door was a funny cartoon that was shown on The Childrens Channel a lot in the 80’s. It had this plastelina feel to it. It was scary, but at the same time funny. I didn’t understand so much English at that time, but this show helped me understand English more and more.
Cause there is something Down there Amazing Intro Theme for The Trap Door
And here is a episode that is freely available on YouTube
Ep 02 “Slither, Wriggle and Writhe” 1984
Berk is putting up shelves. After breaking the wood he was trying to use, he tries to take some from the trap door, only to be attacked by a tentacled thing.