This design is inspired by the city of 7 hills, Seattle. I made it shortly after my 2017 trip to the northwest of the United States. During my visit to Seattle, Chris Cornell of Soundgarden, a grunge band I used to listen to a lot, died. So this is a kind of tribute. I used ballpoint and felt-tip pens. As a result the it has a grungy feel. I then digitalised it and turned it into an infinite pattern by making it seamless.