That is very interesting Good find, can't wait to see what you find out !

There are several old abandoned silver mines in Colorado.

Could this be one?

Are they sure thats a hole? It could be the exact opposite. It kinda looks like a pyramid mound.
just saying..we need a pic of this up close.

it looks like a old house that's fallen down

I lived in Pagosa Springs and hunt elk and deer in the area to this day. I skiied Wolf Creek a week ago and the snow is deep, everything should be covered this time of year . There are plenty of fire roads to get anywhere, lots of public land by the mesa but you need a 4x4 and do it in the summer only, the winter is terrible hiking and the spring is muddy. Most of the land is either Ute or private so watch out, I would be more scared of the Utes than the alien underground base you think is out there. The reason to be scared is the fact that there are many thousand burial mounds in the area and they know when you are miles away so don't think you can sneak up there. I have a CDIB card, but of Chotaw blood and they dont even let me step foot on Ute land without a Ute. If you really want to go contact a local Ute indian and have him take you out, don't go alone. It is best to take a vacation out there, stay at a B&B or the Fairfied go to J&J's get the tuna app and flyfish out the back (two great holes you can find for free), there are great hot springs in town and the stinky sulfur smell wears off with a shower. Check out Chimmey Rock, its 30 minutes west, take the tour, and then ask the guide for a Ute contact. The Ute's take folks on $10,000 elk hunts so I am sure there is a price for anything, even though they will prolly laugh at you tell them what you are up to, I bet you can get someone to help if you let them know you want nothing to do with artifacts or burial mounds. All the old timers and people that really do visit the area talk about black helicopters, the locals do think something is going on they do not know about. Of all the times I have been in the area I have seen only one helicopter in coalmine canyon and found out later a group was illegally spotting elk to hunt them, that is when I decided that the helicopter stories can be written off to this big problem. If you find a place on private land be sure to talk to the owners first. I have been run off at gun point just from fishing on someone's land, they mean business out there so be careful. A group of human torturing aliens are the least of your problems to go it alone.

Is it me or am I the only one that can see the face to the left of the opening? Very interesting video!

Depending on what mineral they mine, there can be a pit associated with the mine. For instance, when you mine gold, you remove the gold from the ore with cyanide.

Don't think there's anything there in Dulce. If there would be an underground base where they are conducting experiments on humans, aliens, animals or whatever there would be an entrance somewhere. People living in that area would have reported buses or planes or whatever going of and on to transport employees in and out of the facility.
First of all, the whole idea of aliens testing on humans, humans testing on aliens, the 7 security levels, the level where they are testing hypnosis and such seems like BS to me. If there would be such type of experiments you wouldn't be able to hike anywhere near the mesa. I mean, in Area 51 they are only testing aircrafts and exploring UFOs through reverse engineering and if you go anywhere near the place all hell breaks loose. So could you imagine what would happen here if you would go anywhere near the mesa?? A facility of that size would leave it's marks all over the place, there would be more reports of people seeing ventilation shafts and watering system, power lines,... things like that.
Then there is the claim of the military doing some aircraft testing in the underground base at dulce. People have seen ufos flying over the mesa, traingles with lights etc... If these aircrafts are supposed to come from inside the mesa there would have to be a HUGE entrance/exit area. A flying saucer couldn't just leave the base through a small hole. Maybe these aircrafts come from another place not to far from dulce on a test flight over the mesa. If a test UFO would crash somewhere over the mesa it would be easier to cover up, so it's an ideal place to test some of these saucerers at night.
Then last but not least: the cattle mutilations in the area. At first I was drawn to the idea of a government-science base under the mesa doing some genetic testing with animals and human genes and stuff. But then there would have to be a number of scientists and rechearchers who go to work every day/week/month, and there would have to be some sort of evidence of that. Maybe the cattle in dulce IS used for genetic testing, but again maybe from outside of dulce. It's a reservation area, so whatever strange things happen in dulce, not alot of people will see it, there wouldn't be alot of reports, no explanations required...
So maybe because of dulce's location and conditions it has become the center of a testing area, but I think that the area where the aircrafts are actually examined and built and where experiments are conducted is somewhere else, and not IN Dulce or under the Mesa.

These are just small bodies of water (mud holes, basically) with tire tracks. Either that or they are small hills... with tire tracks.

[edit on 28-1-2010 by SpacePunk]

I am just wondering if what you are looking at isn't a very sacred site.
the only ones who are allowed to enter is the tribal people cause of ceremonial reasons now i'm not sure but I do know that thy have holes and climb down them in certain ceremonies. I will check into it. I know that they would be very disturbed if this area was visited without consent. But understand I'm not sure. the things that look like beams are ladders. if in fact this is what I think it is. you could search for the tribal information that may get you somewhere???