No, that’s DKC1, in Oil Drum Alley. The second bonus room can grant an explosive barrel that you use to blow open a door to the third bonus room. DKC2 has two bonus rooms stacked on top of each other in Haunted Hall. There’s a track off the normal path that you can jump to, and you go into an entrance, but you want to jump onto the roof of that entrance to get into another, more hidden entrance. That upper bonus stage goes forwards and backwards, and you roll out of it backwards, and then into the lower stage, and then on completion of that you continue the level.