Question: Berlin–Ichthyosaur State Park is located in a ghost town that was established in which year ?

Context paragraphs:
Ghost Town, Oakland, California: Ghost Town (sometimes spelled Ghosttown) is the informal name of the Foster Hoover Historic District neighborhood in West Oakland, Oakland, California.  The community is known for its violence and blight .  Some people believe the name originates from a drug king pin who referred to the area as a ghost town due to the shortage of other drug dealers whose absence was attributed to the king pin's dominance over the area.  Others believe it derives from the two former casket companies located side by side on Filbert Street between 30th and 32nd Streets, while others claim that the presence of ghostly white people in an historically black neighborhood gave it its name.  Ghost Town stretches from 27th Street to 35th Street in the area immediately southwest of the MacArthur Maze.  Others see the neighborhood bounded by Adeline on the West and San Pablo on the East.  Ghost Town Farms, one of the more successful expressions of urban agriculture activity in Oakland is located in the heart of the district at 2727 Martin Luther King Jr.  Way, between 27th and 28th Streets.  The area is also one of Oakland's many open-air art galleries, with exceptional muralist work continually on exhibition, particularly along Martin Luther King Jr.  Way.  This neighborhood has an active citizen crime patrol, including one group of seniors who walk the neighborhood weekly to get physical exercise and report blight.  Jerry Brown, governor of California and former Mayor of Oakland stated: "Instead of an omnibus crime bill, you have to deal with shootings in Ghost Town in West Oakland and sideshows in East Oakland."  Brown made attempts to turn around the blighted West Oakland neighborhood after "60 Minutes" featured it in a television profile.  Housing prices have increased.  So has drug dealing, especially since nearby parks were closed by the City of Oakland.  Prostitution, in 2015, has been on the decline for at least a decade.

Boggy Depot, Oklahoma: Boggy Depot is a ghost town and Oklahoma State Park that was formerly a significant city in the Indian Territory.  It grew as a vibrant and thriving town in present-day Atoka County, Oklahoma, United States and became a major trading center on the Texas Road and the Butterfield Overland Mail route between Missouri and San Francisco.  After the American Civil War when the MKT Railroad came through, it bypassed Boggy Depot and the town began a steady decline.  It was soon replaced by Atoka as the chief city in the area.  By the early 20th century, all that remained of the community was a sort of ghost town.

Calico, San Bernardino County, California: Calico is a ghost town and former mining town in San Bernardino County, California, United States.  Located in the Calico Mountains of the Mojave Desert region of Southern California, it was founded in 1881 as a silver mining town, and today has been converted into a county park named "Calico Ghost Town".  Located off Interstate 15, it lies 3 mi from Barstow and 3 miles from Yermo.  Giant letters spelling "CALICO" can be seen on the Calico Peaks behind the ghost town from the freeway.  Walter Knott purchased Calico in the 1950s, architecturally restoring all but the five remaining original buildings to look as they did in the 1880s.  Calico received California Historical Landmark #782, and in 2005 was proclaimed by then-Governor Arnold Schwarzenegger to be California's Silver Rush Ghost Town.

Ghost Town Village: Ghost Town Village (formerly "Ghost Town in the Sky) is a Wild West-themed amusement park in Maggie Valley, North Carolina, United States that is currently on hiatus.  An unusual aspect of this park is that it is located atop a mountain which can only be accessed by visitors via a 3370 ft chair lift or an inclined funicular railway.  These start at the parking area beside Jonathan Creek at an elevation of 3150 ft , climbing to the lower level of the park at 4400 ft , a climb of 1250 ft .  The recreated "Ghost Town" sits at 4600 ft , with the highest elevation in the park being about 4650 ft .  The park is located on a ridge extending from Buck Mountain border, an extension of the Cataloochee Divide, to the Great Smoky Mountains National Park.  The park's entrance is located on U.S. Highway 19, the main road through the town.  Ghost Town is promoted as "North Carolina's mile-high theme park."

Berlin Historic District (Berlin, Nevada): The Berlin Historic District encompasses the ghost town of Berlin in Nye County, Nevada.  The town was established in 1897 as part of the Union Mining District after the opening of the Berlin Mine the previous year.  The town never prospered to the same extent as other boom towns like Tonopah and Goldfield, and declined following the Panic of 1907.  The town was largely abandoned by 1911.  The site was acquired by the state of Nevada as part of Berlin–Ichthyosaur State Park in 1970.

Tremont, Indiana: Tremont, Indiana, is a ghost town formerly located in what is now the Indiana Dunes State Park and Indiana Dunes National Lakeshore in Westchester Township in northern Porter County, Indiana.  It was first established in 1833.  It was located at the intersection of U.S. Highway 12 and County Road 100 East, near Indiana 49.  The community is named for three massive sand dunes that are now contained within the State park.  They are Mount Tom (200 ft above the surrounding area), Mount Holden 170 ft , and Mount Green 160 ft .

Berlin–Ichthyosaur State Park: Berlin–Ichthyosaur State Park is a public recreation area and historic preserve that protects undisturbed ichthyosaur fossils and the ghost town of Berlin in far northwestern Nye County, Nevada.  The state park covers more than 1100 acre at an elevation of 7000 ft on the western slope of central Nevada's Shoshone mountain range, 23 mi east of Gabbs.

Granite, Montana: Granite is a ghost town in Granite County, Montana, United States, east of the town of Philipsburg.  Granite thrived as a silver mining town in the 1890s, but is now completely deserted.  The state of Montana maintains the mine superintendent's house and the ruins of the union hall as Granite Ghost Town State Park.

Crystal Springs, Nevada: Crystal Springs is a ghost town in the Pahranagat Valley region of Lincoln County, Nevada in the United States.  The ghost town is located at the junction of State Route 318 and State Route 375 (Extraterrestrial Highway), just northwest of U.S. Route 93.  It is a popular destination for passersby who want to visit the towns of Hiko and Rachel.  The namesake of the ghost town, the Crystal Springs, lies nearby; it is a large group of marshes and springs along the White River.  Crystal Springs provides irrigation for multiple nearby ranches and farms, some of which lie over 5 miles away from the springs.

Greenwood Furnace State Park: Greenwood Furnace State Park is a 423 acre Pennsylvania state park in Jackson Township, Huntingdon County, Pennsylvania in the United States.  The park is near the historic iron making center of Greenwood Furnace.  The park includes the ghost town of Greenwood that grew up around the ironworks, old roads and charcoal hearths.  Greenwood Furnace State Park is adjacent to Rothrock State Forest and on the western edge of an area of Central Pennsylvania known as the Seven Mountains.  The park is on Pennsylvania Route 305, 20 mi south of State College.

Supporting paragraphs: Berlin–Ichthyosaur State Park Berlin Historic District (Berlin, Nevada)
Answer: 1897