In 1967 Morris created "Steam", an early piece of Land Art. By the late 1960s Morris was being featured in museum shows in America but his work and writings drew criticism from Clement Greenberg. His work became larger scale taking up the majority of the gallery space with series of modular units or piles of earth and felt. "Untitled (Pink Felt)" (1970), for example, is composed of dozens of sliced pink industrial felt pieces that have been dropped on the floor. In 1971 Morris designed an exhibition for the Tate Gallery that took up the whole central sculpture gallery with ramps and cubes. He published a photo of himself dressed in S&M gear in an advertisement in "Artforum", similar to one by Lynda Benglis, with whom Morris had collaborated on several videos.