Whats this please

[Shawn]

dont usually get into lunar as you may know, but its big bright it and the high cloud and unstable skies bring desparation into the equation, but whats this please...

[AlexN]

The straight line is known as Straight wall, its huge... apart from that, my lunar geography is a bit lacking :)

[astroron]

It's proper name is Rupes Recta, but most people call it the Straight Wall.
It is a 110kms long and between 240-300m high and about 2.5 kms wide.
It is a gradual slope, not a sharp cliff:thumbsup:
Ron

[madtuna]

yep...tis Ruperts rectum...also known as the bum crack

[Shawn]

Thankyou gents, Ill have a go at this when seeing improves, looks fascinating...:)