In the Yucatan ,for instance, people have had the experience of losing themselves in familiar areas. Sometimes for 4 or 5 hours, one case some 10 years back a little girl was gone for 4 days ,a medicine woman brought her back, if you have night time acess to places like Palenque or Chichen Itza, you have a pretty good chance of having an experience. As to what these doors are, they seem to be traveling dorrways, shifting windows in time and space.