Cassie's works on paper include solitary sketches of mountain scenes, often imagining landscapes untouched by human presence. While her overarching theme frequently focuses on transitional spaces, these specific sketches depict the mountain in its current state—unaffected by human activity. The drawings' intimate nature allows for an immediate recording of the landscape as it exists at that moment. By presenting these scenes without human intervention, the viewer is invited to reflect on the contrast between the long-term effects of man and those of nature.