holed through on October 11, 1973. Construction on the section between 5th Avenue and Park Avenue began in August 1974. The project involved digging a -high cavern underneath the street. On March 20, 1975, New York mayor Abraham Beame announced significant cutbacks to the plan. Construction of the Southeastern Queens extension was deferred until 1981, and the Long Island Rail Road extension through the lower level of the 63rd Street tunnel was canceled for the foreseeable future. However, it was still anticipated that the Queens Boulevard super-express and the Archer Avenue Line up to Parsons/Archer would still be completed. The Queens project, although curtailed, was given priority because it was "more advanced in construction". By January 1976, the tunnel was 95% complete. In May, construction was briefly halted when residents jumped into utility pits to protest the cutting of trees near the Lexington Avenue station. A US federal judge issued a stop-work order on May 13, but issued another verdict five days later that allowed construction to proceed. Construction resumed on May 25, after three weeks of protests, and the trees were cut down anyway. In summer 1976, the NYCTA announced that "it will take an extra five or six years—until 1987 or 1988—to complete the new Manhattan–Queens trunk subway line from Central Park to Jamaica via the new 63rd Street tunnel." The main cause of the delay was the 5.8-mile "super express", although it was expected that the three new Archer Avenue line stations could be ready sooner. As an interim measure, the NYCTA proposed a new station at Northern Boulevard, adjacent to the Queens Plaza, which could possibly open by 1983 or 1984. However, there were also a lack of federal funds, so this could not be completed immediately. By this time, there were only going to be seven stations on the 63rd Street and Archer Avenue Lines combined. At the time, these two lines were part of the same route, the 63rd Street–Southeast Queens line. The Manhattan portion of the line was completed in 1976. The Times noted: Zoo York Wall The Zoo York Wall was a graffiti wall within the line's length through Central Park, where subway writers and other street artists "made their marks" in the early 1970s. It was a temporary wall, erected by the NYCTA in 1971 to block unauthorized entry into the site of the 63rd Street Line running underneath the Central