Question: What census-designated place straddles Gallatin and Madison counties, and was home to the Moonlight Basin ski resort?

full_context: Document 1: Big Sky Brewing Company: Big Sky Brewing Company is a brewery located in Missoula, Montana, USA. It brews six different styles of beer: Moose Drool (a brown ale), Scape Goat (Pale Ale), Big Sky (India Pale ale), Powder Hound (Winter Ale), Summer Honey (Seasonal Ale), and Trout Slayer Ale.
Document 2: Vail Ski Resort: Vail Ski Resort is located in Eagle County, Colorado, next to the town of Vail. At 5289 acre , it is the 3rd largest single mountain ski resort in the United States behind Big Sky and Park City, featuring seven bowls and intermediate gladed terrain in Blue Sky Basin. It opened in 1962 and is currently owned and operated by Vail Resorts, which also operates three other ski resorts in the state (Breckenridge, Keystone, and Beaver Creek), Heavenly Ski Resort, Northstar at Tahoe, and Kirkwood Mountain Resort at Lake Tahoe, and Park City Mountain Resort in Park City, Utah.
Document 3: Bridger, Gallatin County, Montana: Bridger is a census-designated place (CDP) in Gallatin County, Montana, United States. It comprises the Bridger Bowl Ski Area and some nearby residences on the eastern side of the Bridger Range in southwestern Montana. As of the 2010 census the Bridger CDP had a population of 30.
Document 4: Moonlight Basin: Moonlight Basin was a ski resort in southwestern Montana, located in the Madison Range of the Rocky Mountains in the resort village of Big Sky. In October 2013, it, along with ski terrain within the Club at Spanish Peaks, were consolidated into Big Sky Resort, making Big Sky the largest single ski resort in the United States, with 5,750 acres (2,330 ha) of terrain and over 30 ski lifts.
Document 5: Yellowstone Club: The Yellowstone Club, also Yellowstone Ski Resort, is a private residential club, ski resort, and golf resort located in the state of Montana, USA. The Rocky Mountain ski and golf club is located in eastern Madison County, just west of Big Sky, Montana, south of Bozeman and northwest of Yellowstone National Park.
Document 6: Glacier Country, Montana: Glacier Country, Montana is a tourism region in the U.S state of Montana. Glacier Country includes the cities of Missoula, Kalispell, Polson, Libby, Whitefish, Browning, Montana, Eureka, Montana and Thompson Falls. Glacier Country is home to Glacier National Park, and Montana's 2nd largest city- Missoula, Montana. The 2015 population of Glacier Country is 332,702.
Document 7: List of people from Montana: Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name, derived from the Spanish word "montaña" (mountain). Montana has several nicknames, none official, including: "The Treasure State" and "Big Sky Country", and slogans that include "Land of the Shining Mountains" and more recently, "The Last Best Place". The state ranks fourth in area, but 44th in population, and accordingly has the third-lowest population density in the United States. The economy is primarily based on services, with ranching, wheat farming, oil and coal mining in the east, and lumber, tourism, and hard rock mining in the west. Millions of tourists annually visit Glacier National Park, the Little Bighorn Battlefield National Monument, and three of the five entrances to Yellowstone National Park.
Document 8: Big Sky, Montana: Big Sky is a census-designated place (CDP) in Gallatin and Madison counties in southwestern Montana. As of the 2010 census it had a population of 2,308. It is 45 mi southwest of Bozeman. This unincorporated community straddles the two counties, is not considered a town, and has no town government. The primary industry of the area is tourism.
Document 9: List of entertainers from Montana: Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name, derived from the Spanish word "montaña" (mountain). Montana has several nicknames, none official, including: "The Treasure State" and "Big Sky Country", and slogans that include "Land of the Shining Mountains" and more recently, "The Last Best Place". The state ranks fourth in area, but 44th in population, and accordingly has the third-lowest population density in the United States. The economy is primarily based on services, with ranching, wheat farming, oil and coal mining in the east, and lumber, tourism, and hard rock mining in the west. Millions of tourists annually visit Glacier National Park, the Little Bighorn Battlefield National Monument, and three of the five entrances to Yellowstone National Park.
Document 10: Bozeman Yellowstone International Airport: Bozeman Yellowstone International Airport (IATA: BZN, ICAO: KBZN, FAA LID: BZN) (Gallatin Field) is located in Belgrade eight miles (13 km) northwest of Bozeman, in Gallatin County, Montana. Owned by the Gallatin Airport Authority, the airport became the busiest airport in Montana in 2013.
Document 11: Mount Bachelor ski area: Mount Bachelor ski resort is a ski resort located in central Oregon, approximately 22 mi west of Bend, along the Century Drive Highway. The ski runs are on the northern face of Mount Bachelor, a stratovolcano built atop a volcanic shield in the Cascade Range. Since 2001, the ski area has been owned by Powdr Corporation of Park City, Utah. It is the largest ski resort (by area) by more than 1000 acre in Oregon, the second largest single-mountain ski resort in the U.S., behind Vail, and the sixth largest of all ski resorts in the nation.
Document 12: Flathead Valley: The Flathead Valley, located in Northwestern Montana, is a region of the U.S. state of Montana. It includes Flathead County, and part of Lake County. Notable towns include Bigfork, Kalispell, Columbia Falls, Polson, and Whitefish. The geography of the Flathead roughly corresponds to the valley where Flathead Lake is located. In addition to the lake, the area's proximity to attractions such as Glacier National Park and Whitefish Mountain Resort have made the area a major resort destination. Many outdoor activities can be pursued there such as hiking, backpacking, rafting, canoeing, skiing, hunting, and some of the best trout fishing in the world. The Flathead Valley is also home to a portion of the Flathead Indian Reservation.
Document 13: Bozeman, Montana: Bozeman is a city in and the county seat of Gallatin County, Montana, United States, in the southwestern part of the state. The 2010 census put Bozeman's population at 37,280 and by 2016 the population rose to 45,250, making it the fourth largest city in the state. It is the principal city of the Bozeman, MT Micropolitan Statistical Area, consisting of all of Gallatin County with a population of 97,304. It is the largest Micropolitan Statistical Area in Montana and is the third largest of all of Montana’s statistical areas.
Document 14: Big Sandy, Montana: Big Sandy is a town in Chouteau County, Montana, United States. The population was 598 at the 2010 census. Big Sandy, Montana, is where the Big Bud 747, the largest farm tractor in the world, was located from 1997 until 2009. The Lewis and Clark Trail, following U.S. Route 87, goes through Big Sandy and in 2011 the town was named in a list of "Most Livable Small Towns" by Montana Outdoors magazine.
Document 15: Red Lodge Mountain: Red Lodge Mountain is an alpine ski area in the western United States, located in south-central Montana along the eastern front of the Beartooth Mountains, west of the town of Red Lodge.
ground_truth: Big Sky