A 2009 paper in Science announced the identification of at least 488 fibers of flax attached to clay samples found in a cave in Georgia. Some of these fibers had been spun and dyed, and one of the threads (no. 8 below) had been twisted. The applied colors, ranging from black to gray to turquoise, may indicate that the inhabitants of the cave were engaged in producing colorful textiles. The presence of spores in the cave indicates that fungus was probably already growing on the clothes and progressively breaking them down.
From Eliso Kvavadze et al., SCIENCE 325: 1359 (2009). Reprinted with permission from AAAS.