There were a record number of crop circles in the year 1990, marking a massive turning point when the phenomenon exploded into global pop culture. During this year, the designs evolved from simple, basic shapes into massive, highly complex geometric patterns known as "pictograms".

The most famous crop circle of 1990 - and arguably of all time - was the Eastfield Pictogram, discovered in July 1990 near Alton Barnes in Wiltshire, England. It was a massive, 600-foot-long formation consisting of multiple circles, straight lines, and claw-like shapes. The design became so famous that the legendary rock band Led Zeppelin used a photograph of it for the cover of their Remasters album box set released in October 1990.

The sheer complexity of the 1990 formations triggered intense media coverage and scientific debate.

Researchers and "cereologists" (crop circle investigators) fiercely debated whether they were caused by extraterrestrial visitors, mystical Earth energies, or a rare meteorological phenomenon called "plasma vortices".

In the summer of 1990, high-profile copycats and pranksters also began actively tricking researchers. For example, the BBC Archive details a 1990 prank where perpetrators set up fake orange lights in the sky and left a Ouija board inside a poorly trampled field to mock over-eager scientists.

While 1990 was the peak of "crop circle fever," the mystery was largely solved just one year later. In September 1991, two English co-conspirators named Doug Bower and Dave Chorley confessed to creating over 200 crop circles across the English countryside since 1978 using planks of wood, ropes, and baseball caps with wire sights to walk in straight lines. Their confession inspired countless copycat artists, continuing the landscape art tradition throughout the decade.

Crop Circles and A.I.