Mars HiRISE photo mystery

Wed Nov 11, 2009 6:55 pm » by **Lehmanaid**

Hello everyone,this is my first post and I was hoping to get some feedback on this photo I found on the HiRISE site.
There is a mysterious black hole on the surface of an otherwise brightly lit plain that even the NASA scientists are at a loss to explain!

I'll just post the link as I'm a bit of a NooB still.........
http://hirise.lpl.arizona.edu/PSP_003647_1745
Thanks for checking this out.

Wed Nov 11, 2009 6:59 pm » by **Theduck**

Candidate Cavern Entrance Northeast of Arsia Mons (PSP_003647_1745)

Candidate Cavern Entrance Northeast of Arsia Mons (PSP_003647_1745)
Credit: NASA/JPL/University of Arizona
This image shows a very dark spot on an otherwise bright dusty lava plain to the northeast of Arsia Mons, one of the four giant Tharsis volcanoes.

This is not an impact crater as it lacks a raised rim or ejecta. What's amazing is that we cannot see any detail in the shadow! The cutout shows this dark spot and a version that is "stretched" to best see the darkest area, yet we still cannot see details except noise (1380x782, 1 MB).

The HiRISE camera is very sensitive and we can see details in almost any shadow on Mars, but not here. We also cannot see the deep walls of the pit. The best interpretation is that this is a collapse pit into a cavern or at least a pit with overhanging walls. We cannot see the walls because they are either perfectly vertical and extremely dark or, more likely, overhanging.

The pit must be very deep to prevent detection of the floor from skylight, which is quite bright on Mars.
Written by: Alfred McEwen

Very strange...Welcome btw good first post.

Wed Nov 11, 2009 7:43 pm » by **Lehmanaid**

Hey,Thanks Duck for posting the actual photo with the write-up.
One day I will master the Force :badair:

Thu Nov 19, 2009 6:46 am » by **Loneqqwolf**

As we all know me here as not seeing things as others see them I have this idea.

At first I thought shadow, naw not really.

So I started my filter process to see what I could find and nothing I have would show a hole.

So simple things sometimes bring out what we can't see, the photo is way to bright to view so I colored it to make my view easier and as you can see the hole has what looks to me to be a vapor trail of some kind.

I feel the reason no one can get a down contour of the hole is that there is none as it could be a very massive disc caught on camera as it glides just above the surface.

Ross Curley
Mars Anomaly Research Society
Chief Photo Analyst

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Thu Nov 19, 2009 7:23 am » by **Willowsprings**

wow your right wolf nicely pointed out. you dont need to alter it to plainly see a trail of some sort. and also it looks like its been blacked out. it looks censored to me. it doesnt look like a shodow it looks like a sharpie. :clapper:

cool picture.

Thu Nov 19, 2009 7:42 am » by **Strider2**

if there was water vapor coming from inside the opening, then it would form frost around the rim and a tail from in the direction of the prevailing winds.

Thu Nov 19, 2009 8:08 am » by **Anrk0207**

yeah i would have to agree with a couple of comments looks very like their trying to cover something up.whats with Nazi sorry i mean NASA not.we get some good quality pics from mars and shit ones of the moon their shits :shooting:

.good first post keep them coming :cheers:

Thu Nov 19, 2009 3:56 pm » by **Cornbread714**

Click on this. (It's too big to post):

http://hiroc.lpl.arizona.edu/images/200 ... _cut_b.jpg

Welcome, Lehmanaid. Good post! :cheers:

Thu Nov 19, 2009 8:30 pm » by **Thewolfshowl**

First we had the "Hollow-Earthers", now we are going to have "Hollow-Marsers". :robot:

Thu Nov 19, 2009 8:55 pm » by **Boondox681**

nice close-up.WTF is this?.obviously a hole,but to where or for what.nice find.