Gilman Tunnels in New Mexico
Located on NM Hwy. 485, just north of the hamlet of Gilman, the Gilman tunnels were originally blasted out of the rock in the 1920's for a logging railroad and are quite high. There are several spectacular turnouts on the short climb.
Use red/blue glasses for best effect.
Anaglyph 3D is the name given to the stereoscopic 3D effect achieved by means of encoding each eye's image using filters of different (usually chromatically opposite) colors, typically red and cyan. Anaglyph 3D images contain two differently filtered colored images, one for each eye. When viewed through the "color-coded" "anaglyph glasses", each of the two images reaches one eye, revealing an integrated stereoscopic image.