Environmental patterning + LSD
LSD is known to produce environmental patterning, a visual effect. A visual effect in which existing textures and surfaces — carpets, clouds, foliage, walls — spontaneously reorganize into intricate geometric patterns that are clearly composed of the original material rather than being overlaid onto it.
About Environmental patterning
Environmental patterning is a distinctive visual phenomenon in which the textures and surfaces of the surrounding environment begin to spontaneously reorganize themselves into complex geometric configurations. Unlike standard geometric hallucinations, which overlay abstract patterns on top of the visual field like a transparent filter, environmental patterning works with the existing material of reality. A carpet's fibers rearrange into fractal spirals. Tree bark morphs into tessellating honeycombs. The grain of a wooden table flows into recursive, mandala-like forms. The geometry is unmistakably made from whatever surface it appears on.
This distinction is important because it gives environmental patterning a uniquely organic and grounded quality. The patterns do not feel "added" to reality — they feel as though they were always latent within the textures and are now simply revealing themselves. Many users describe the experience as seeing the hidden mathematical order within natural surfaces, as though the underlying geometry of matter itself is becoming visible. Dense, complex textures provide the richest substrate: thick carpets, clouds, dense vegetation, gravel, and rough stone surfaces are particularly prone to this effect.
The patterns themselves can be symmetrical — producing mandala-like radial formations and mirror-image tessellations — or they can manifest as disorganized fractals, spiraling form constants, and flowing organic structures. At lower intensities, the patterning is subtle and may only be noticeable when staring at a textured surface for several seconds. At moderate intensities, it becomes spontaneous and unmissable, with every surface in the environment participating in the geometric reorganization. At high intensities, the patterning can become so dense and dynamic that the original objects beneath it become difficult to recognize, blurring the boundary between environmental patterning and full-blown geometric hallucinations.
Environmental patterning frequently co-occurs with symmetrical texture repetition (where textures tile and repeat across surfaces),drifting (slow flowing motion within surfaces), and standardgeometry. It is most reliably produced by moderate to high doses of classical psychedelics — LSD, psilocybin, mescaline, and 2C-B — and its intensity scales predictably with dose. Many experienced psychedelic users consider it one of the hallmark indicators that a trip is entering its visual peak.