A Vulcan lute on Aldea. The Vulcan lute (sometimes referred to as Vulcan harp, Vulcan lyre, or Vulcan Lyrette) was a twelve-stringed instrument, played on the planet Vulcan, that was tuned on a diatonic scale and noted to be very soothing.
Keystone Average Weather. 1  The highest monthly average temperature in Keystone for July is 54 degrees. 2  The lowest monthly average temperature in Keystone for December is 14 degrees.  The most monthly precipitation in Keystone occurs in January with 0 inches.
Amtrak 's 195-mile (314 km) Keystone Service provides frequent higher speed passenger train service along the Amtrak-owned Keystone Corridor between the Harrisburg Transportation Center in Harrisburg, Pennsylvania and 30th Street Station in Philadelphia.t is Amtrak's fifth-busiest route, and the railroad's third-busiest in the NEC. In fiscal year 2013, the service carried 1.47 million passengers, an increase of 3.2% over FY2012.