is a stone arch that carries one pedestrian walkway over another, and is made of rockface ashlar. Additionally, the Gill Bridge, a wooden bridge, crosses the Gill at its mouth. Another wooden bridge, unnamed, is located further upstream of the Gill. Cave A cave was originally located inside the Ramble, adjacent to Ramble Arch. It was not originally part of the Greensward Plan, but rather, was originally a narrow cavity uncovered after a deposit of fertile soil was excavated at the site. Olmsted and Vaux lined the entrance of the cavity with boulders and created a stone staircase down to the Cave. The Ramble Cave, also known as Indian Cave, was a popular attraction. It was characterized as a romantic spot and as a play area for kids. A teenage runaway may have lived in the Cave for a month in the late 1890s. However, by the early 20th century, the Cave had become associated with crime. For instance, a suicide in the Cave occurred in 1904, and an alleged attempted robbery occurred in 1922. Some of the more than 300 men arrested in Central Park in 1929 for "annoying women" were apprehended in the Cave. By 1934, it was sealed off because of numerous reports of suicides, crimes, and homeless people. Hernshead and Ladies' Pavilion The western shore of the Lake, between 75th and 77th Streets, contains a rocky promontory that Olmsted called the Hernshead. Translated to "heron's head", it is named because the outcrop is shaped roughly like a heron's head. The outcrop was restored in 1987. The Ladies Cottage was once located at the Hernshead. It was so named because it abutted the Ladies' Skating Pond, and might have been used as a gender-separated locker room for female skaters as early as 1860. The Ladies' Pavilion, a wrought iron shelter in a playful Gothic style, was later relocated atop the Hernshead. Jacob Wrey Mould had designed the pavilion in 1871 as a shelter for people waiting to change streetcars at Columbus Circle in the southwest corner of the park. Though no drawings remain of the original Ladies' Pavilion, Mould designed a similar shelter at the southeast corner, on Fifth Avenue, between 1871 and 1872. When the USS Maine Monument was installed on the shelter's site, the cast-iron elements were disassembled and stored, to be re-erected on the Hernshead. The exact date of the pavilion's relocation is unclear: