Search for Mars Polar Lander (crashed 1999)
The HiRISE Team invited people to search their image data for the missing polar lander that crashed 1999 on Mars.
The lander itself looks like this:
I joined and tried to find the lander. I found these places:
I found this one: PSP_005958_1025_RED.JP2 - X: 12020px - Y: 3930px
With some imagination it looks like a crashed lander with two solar panels in the north of the object.
I found this one:
PSP_005958_1025_RED.JP2 - X: 9644px - Y: 5586px
It might be just a small cloud above a small hill or a dust devil (not possible so far north?) or it might be something else.