opening show, Stage Show. 開場秀/ 開幕式表演, 舞台表演

Artists perform during a show on the opening day of the Gotthard rail tunnel at the fairground Rynaecht at the northern portal in Erstfeld, Switzerland, on June 1, 2016.
The new Gotthard Base Tunnel (GBT) is set to become the world's longest railway tunnel when it opens on June 1. The 57-kilometre (35.4-mile) tunnel, which runs under the Alps, was first conceived in sketch-form in 1947 but construction began 17 years ago. (Photo by Fabrice Coffrini/AFP Photo)

Artists perform during the opening show directed by German director Volker Hesse, on the opening day of the Gotthard rail tunnel, at the fairground Rynaecht at the northern portal in Erstfeld, Switzerland, Wednesday, June 1, 2016. (Photo by Ruben Sprich\Pool Photo via AP Photo)

Artists perform during the opening show directed by German director Volker Hesse, on the opening day of the Gotthard rail tunnel, the longest tunnel in the world, at the fairground at the southern portal in Pollegio, Switzerland, 01 June 2016. (Photo by Gabriele Putzu/EPA)
Bizarre Stage Show Opens 35-Mile Rail Tunnel under Swiss Alps
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