In June 1912, the Novarupta volcano on the Alaska Peninsula in the United States erupted violently, marking the largest volcanic event of the 20th century. It expelled about 13-14 cubic kilometers of magma, forming a massive ash cloud that reached high into the stratosphere and creating the Valley of Ten Thousand Smokes in what is now Katmai National Park. The eruption had minimal direct human casualties due to the remote location but caused widespread ashfall across North America and affected global atmospheric conditions. This event reshaped scientific understanding of volcanic processes and highlighted the power of subduction zone volcanoes.

The Novarupta eruption and its atmospheric effects contributed to unusual weather patterns that poets and writers of the early 20th century noted in their works, influencing modernist themes of nature's indifference and human fragility. It indirectly informed the ecological awareness in nature poetry, with echoes in works by poets like Robert Frost who engaged with harsh American landscapes. The event's documentation advanced geological science, which later inspired eco-poetry movements exploring environmental catastrophe. Overall, it underscored humanity's vulnerability to planetary forces in an era of rapid industrialization and literary experimentation.