World 7-1 (Super Mario Maker for Nintendo 3DS)
From the Super Mario Wiki
World 7-1 is the first level of World 7 of Super Mario Challenge from Super Mario Maker for Nintendo 3DS. It is based on the sample course Chain Chomp from the Wii U version. Some on tracks, others have wings. At the end, there is a picture of a Chain Chomp made of Brick Blocks and Cloud Blocks.