dogs, fires, and glass containers are also prohibited in the area. Fall Creek Unit extension The northern extension of Henry Cowell State Park, called Fall Creek Unit, contains over 20 miles (30 km) of hiking trails, mostly along the creeks that flow year-round and make beautiful mini waterfalls during the rainy season (November–March). There is also an 18-hole Disc Golf course, Black Mouse, run by a local school (Nature Academy). Along Fall Creek are the ruins of a 19th-century lime manufacturing operation, including a quarry and lime kilns built by I.X.L. Lime Company (established in 1874). The lime works were later acquired by industrialist Henry Cowell. The Fall Creek in Santa Cruz County originates near Empire Grade Road, and flows 4–5 miles South and South-East before it meets San Lorenzo River, east of Highway 9. Dogs and bicycles are not allowed in the Fall Creek Unit. History During the 1830s and 40s, when California was still part of Mexico, large land grants were created, called "ranchos". The lands now included in the State Park were once parts of three different ranchos. Rancho Cañada del Rincon en el Rio San Lorenzo, Rancho Zayante and Rancho Carbonera. By 1865, most of the former rancho lands had been subdivided. Industrialist Henry Cowell purchased of the former Rancho Cañada del Rincon en el Rio San Lorenzo, including of forest, in 1865, adding to his quarrying and lime operations in the vicinity. A significant number of buildings in San Francisco were built using the redwood and limestone products from this area. In the 1920s the owners of a large resort adjacent to Henry Cowell's holdings raised support for the County of Santa Cruz to buy and preserve their pristine redwood lands, an action finally approved of, in large part thanks to the work of California Lieutenant Governor, the Hon. William Jeter, in 1930. Eventually philanthropist Samuel Cowell, aged 90, last of the Cowell line, (and endower for Cowell Hall at the University of San Francisco), donated the rest of what became the Park to the State, but only under the condition that Santa Cruz County also give up its nearby portion of the land (Big Trees Park) to the State so that it could all be managed together. Thus, the Henry Cowell Redwoods State Park was officially created on August 15, 1954. The separate Fall Creek unit was added later. In February 1973, serial killer