Sopan, the steps shawl, is a crochet adaptation of the Pfeilraupe scarf by Alpi Alpenrose which can be found here

It is written for both DK and sock weight yarn, and has simple instructions to allow you to use up all of your yarn within the project.

For DK weight, you will need 200g and a 5.5mm or 6mm hook.
For sock weight, you will need 100g and a 3.5mm or 4mm hook.