The Forbidden Marsh is an art installation by Naraphat Sakarthornsap with sound design by ANAPARN and lighting design by Human Spectrum. It was held at PoA White Box, Yellow Lane from 4-26 February 2023 as a part of Bangkok Design Week. The exhibit was inspired by a pond near the artist's childhood home, which was wild and uninviting. Naraphat aimed to recreate this marsh, where participants could wade in and face what lay within. The exhibit drew many attendees who were mesmerized by the indoor marsh, and those who explored behind the reeds found items hidden by the artists, including gay pornography that Naraphat used to hide from his mother when he was young.
Special performances were also held on weekends, including a solo cello performance by Yui Saowakhon, a dance performance by DD Flection and Anaparn, a butoh performance by Sineenadh Keitprapai and Payap Kaewkred, and a shibari performance by Yada.Kinbaku, Tati Limati, and Annmanee Singhanart.