reply to post by scubagravy
...ive checked out photo 1, there appears to be a tower halfway down the hill at the 4 o'clock position.It casts a tall shadow.
The 'tower' you see is likely not as tall as you imagine. In fact, when I zoomed in, I saw two other similar shapes, and shadows. AND, from them,
when you look at the 10- t0 11 o'clock form them, you see another!
These Lunar photos were taken when the Sun was at a low angle, to accentuate the shadows!! You can see the same effect, here on Earth...depending on
your Latitude, and the time of year. THIS is how sundials work!!!!
As to the photo of that crater? The central portion is most likely a depression, NOT a 'mesa'.
We see mesas on Earth because of the centuries or millenia of erosion, to form those features. The Moon has no 'erosion', as we are familiar. No
wind, rain, etc. No liquid water, on the surface, either. Its 'erosion' is conducted by the stray events of impacts from meteors.....
IN that photo, the odd shape in the approximate middle is just a depression....likely a result of the rebound, after the impact of whatever formed the
crater in the first place. Same with the odd vertical structures we see casting the shadows. Spires, of some sort...but certainly natural in origin.
AND, not nearly as tall as the shadows would imply. Just look to GoogleEarth as an example: When you examine the pictures, they are 'top-down',
and mostly try to minimize shadows in order to give the best clarity to features on Earth.
Imagine IF the GoogleEarth photos were taken when the Sun was low on the horizon, and you looked at a line of telephone poles....their shadows would
be
much longer than their actual height above the ground, because of the angle of the light.
This is how sundials work!! THEY rely on shadows cast....but. Length of shadow, whether on Earth, or on the Moon, are dependant on Latitude of
observation, and postion of the body (any body....the Earth, Moon, Mars, etc.) and its inclination in its orbit, relative to the Sun.....