The original wooden covered walkways connecting the various campus buildings were built in the 1930s, and most were replaced (although a few of the originals remain) with two-story brick covered walkways built in 2002–03 (as originally planned in 1929), when the campus was made ADA compliant (and air conditioned), funded by money approved in a bond referendum in 2000. It has been said that the use of hard clay in the set up of walkways in 2002-03 created the infamous "Lake Grimsley" in the front lawn. Lake Grimsley (as students call it) is a large area of standing water that forms when it rains heavily or for a long period of time. The Grove (developed in 1963), a large outdoor social area between the Main and Music buildings is a popular spot for eating lunch and hanging out, although the 2012–13 school year was the final year students were allowed to eat lunch in the grove (with the exception of the rare occasion of a combined lunch), due to the opening of the New Cafeteria. Originally the majority of the Grove was covered with gravel, but it was paved with cement in late 1973. Besides the paved areas, there also is an area with a mulch ground covering, and several large trees which provide shade for many picnic tables.