A multimedia installation, Downfall (2013) revolves around Tangtrakulwong's experience of seeing 16-year-old Praya Sattabun trees (also called Indian Devil or White Cheesewood trees) being cut down because of its overpowering odor that is most menacing during certain months of the year (November - January). The installation is composed of a 20-feet sculpture of the fallen tree's shadow; a video of the cutting down of the trees at Faculty of Fine and Applied Arts, Mahasarakham University; and a collection of drawings and still images of the remaining Praya Sattabun trees at the Mahasarakham University campus and photographs of big trees in the Roi Et province.