The Deliktaş Tunnel (Turkish: "Deliktaş Tüneli" ), a.k.a. Kangal-Deliktaş Tunnel, is a railway tunnel near Deliktaş village between Ulaş and Kangal districts of Sivas Province in Central Anatolia, Turkey.
 It was built to shorten and to ease the ramp on the railway line connecting Sivas with Malatya and Erzincan.
 The construction began on November 15, 1973, however its progression was quite slow until 2003 when the Turkish State Railways (TCDD) took over the project.
 Although the works at the tunnel were completed in 2006, works for the infrastructure on the railway line around the tunnel began only in 2009.
 At the end of 2011, all construction works were finished.
 Following the installation of signalization facilities, and completing the test runs with freight trains, the tunnel was put into service in late 2012.
The Free Expression Tunnel is the longest, widest, and most heavily used pedestrian tunnel under the railroad tracks at North Carolina State University in Raleigh, North Carolina (also goes under Yarbrough Drive).
 The special aspect of the tunnel is that anyone is permitted to decorate its walls, ceiling, and floor.
 The tunnel connects NCSU's North Campus with the Central Campus and provides the most direct route from the The Brickyard to the Central Campus residence halls.
 Clubs, fraternities, sororities, and other organizations often paint the tunnel to promote events and amateur artists paint to express themselves and to promote freedom of speech.
 A retaining wall just outside the tunnel's south entrance is also open for free expression.
 The "service tunnel" itself was constructed in 1939 as a Public Works Administration project.
 The tunnel was first painted in 1968, when it was painted red and white to celebrate the military veterans of North Carolina
Route 44T, also known as the Gloucester County Tunnel, was a proposed state highway and vehicular tunnel during the 1930s from Gloucester County, New Jersey to Philadelphia County, Pennsylvania.
 The route was to begin at the state line near Paulsboro, New Jersey, heading eastward as a freeway through several southern New Jersey communities and providing access from New Jersey Route 42 to the Delaware River.
 The plans for the original freeway date back to 1930, when the original studies and requests were decided on by the New Jersey State Legislature.
 Plans soon followed in Pennsylvania, but after three years of receiving approval, the Gloucester County Tunnel experienced several setbacks.
 In 1938, the New Jersey State Legislature designated the State Highway Route 44-T designation, as a suffixed tunnel spur of New Jersey Route 44.
 By the 1953 renumbering, Route 44-T was already repealed and decommissioned while the tunnel was never constructed by the Gloucester County Tunnel Commission.
"Tunnel de la mort" "(Death tunnel)" is the informal name given, in Montreal, to the notoriously dangerous intersection of Rue d'Iberville and Boulevard Saint-Joseph, at the border of the Rosemont–La Petite-Patrie and Plateau-Mont-Royal boroughs.
 The intersection owes this name to the fact it was originally surrounded by three railway overpasses immediately to the north, east, and west of it, and by concrete retaining walls on all four corners, severely restricting visibility to approaching motorists.
 Over 250 serious accidents have been reported at that intersection between 1992 and 2002.
Saint Joseph Boulevard (official in French: boulevard Saint-Joseph ) is a major boulevard located east of Mount Royal in Montreal, Quebec, Canada.
 It is mainly residential, but is nevertheless a major east–west artery.
 It is located in the Plateau Mont-Royal and the Rosemont–La Petite-Patrie boroughs.
 Its intersection with Iberville Street is known as the infamous Tunnel de la mort (Death Tunnel).
Tanum Tunnel (Norwegian: "Tanumtunnelen" ) is 3590 m double-track railway tunnel on the Asker Line, between Jong in Bærum and Åstad in Asker, Norway.
 It was built as part of the first state of the Asker Line, between Asker and Sandvika; construction started in February 2002 and the tunnel opened on 27 August 2005.
 The tunnel was built by AF Gruppen for the Norwegian National Rail Administration.
 Most of the tunneling was conducted using the drilling and blasting method, although the easternmost 800 m were built using the cut-and-cover method.
 After the tunnel opened, there have been problems with leaks damaging the superstructure.
 The tunnel has double track, is electrified and allows for a maximum speed of 160 km/h .
 The cost to build the tunnel, excluding the superstructure, was 370 million Norwegian krone (NOK).
 The tunnel will accelerate intercity and regional traffic west of Oslo and free up capacity for the Oslo Commuter Rail on the Drammen Line.
The Smørstein Tunnel is a 288 m railway tunnel located at Smøstein in Holmestrand, Norway.
 The tunnel carried a single, electrified track of the Vestfold Line.
 The need for a tunnel arose after a 19 August 1918 landslide washed away the railway past Smørstein.
 A temporary track was in place from 28 October, but the Norwegian State Railways (NSB) determined that the geology was too unstable and thus decided to build a tunnel to avoid the poor geological conditions.
 The tunnel opened on 25 May 1921 and was until 2010 the only tunnel on the Vestfold Line between Drammen and Larvik.
 The tunnel and the section of line was scheduled to be closed in 2016 with the opening of the Holmestrandsporten tunnel.
The Waverly Hills Sanatorium is a closed sanatorium located in southwestern Louisville/Jefferson County, Kentucky.
Death Tunnel is a 2005 horror movie filmed at the Waverly Hills Sanatorium.
 It stars Steffany Huckaby, Annie Burgstede, Kristin Novak, and Jason Lasater.
The Pyatt Tunnel is a historic railroad tunnel in Marion County, Arkansas.
 It is a 660 ft tunnel, hewn through bedrock beneath a ridge north of Crooked Creek and southeast of the city of Pyatt.
 The tunnel's portals are unimproved, and the tunnel itself has no concrete reinforcement, unlike other tunnels on the White Mountain Division of the Missouri Pacific Railroad, which passes through it.
 The tunnel was built in 1903-04, and is one of seven railroad tunnels in the state.

Question: In which state was Death Tunnel filmed?
Answer: Kentucky