That 'sphinx' head atop the Morlock's entryway....
Looks A LOT like the alien in "Earth vs. The Flying Saucers"!
http://monsterkidclassichorrorforum.yuku.com/topic/49348/EARTH-VS-THE-FLYING-SAUCERS-unidentified-stills#.UppDfhbnCVM
http://www.classicfilmtvcafe.com/2010/08/time-machine-victorian-beauty-and.html
"Don't call me 'honey', mac."
"Don't call me 'mac'... HONEY!"