"Habitat," a landscape sculpture by artist Alice Adams, is located near the Montclair State train station at Little Falls. The detention basin, which replaces an earlier pond harboring frogs, turtles, birds and other species, continues as a miniature habitat. The materials of the 130-by-100-by-13-foot deep basin include stone-filled wire containers called gabions, which form the continuous upper and lower terrace rings and have light gray stone with the middle ring filled with dark red. The gabion terraces are carpeted with a species of liriope, a ground cover about nine inches high. The concrete pyramid in the lower basin is clad with natural cleft bluestone and slopes down to a ring of river flats at its base. The three low mounds around the pyramid on the basin floor have Delaware river stone, Mexican beach pebbles and Rio Grande skippers, one variety of stone cladding each mound. The bottom of the basin around the pyramid and mounds is covered with gray limestone and white marble gravels. In addition, Adams designed a precast concrete wall cap on a retaining wall below the platform and track area and across the roadway from the "Habitat" basin, and inserted a band of orange brick in the pavement at the wall's base.