Not so much a knitting pattern, rather a description of my project in stages. It is suitable for the beginner knitter, as it only requires knowledge of a few knitting basics:

You will need to be able to cast on and off.

You should feel reasonably comfortable knitting on circular needles.

You need to be familiar with the knit stitch.

Please note, my instructions are for a large, slouchy tunnel (40cm wide and 70cm long). The size of the tunnel can be adapted easily by casting on fewer stitches and knitting fewer rows.