Enclosed Reclining Environment for One was exhibited with 15 other works in the Museum of Contemporary Crafts’s 1970 Contemplation Environments exhibition. Drawing from modern ideas of Eastern transcendental meditation and mind-body theories (as well as the Museum’s ongoing commitment to break with tradition by offering visitors a participatory experience), the show sought to address a new need for rest and relaxation because, as the catalog editorialized, “today we live in overcrowded, noisy, dehumanized communities where there are few places of solitude.” Castle’s cave-cum-womb synthesized his wood and plastic interests. Its body was a laminated oak cubbyhole fully carpeted with furry throw pillows. Once a visitor entered, his or her weight activated a light bulb on top of a flocked fiberglass tail.