The seed "City Shining on a Hill" (without quotes) spawns you in the middle of a somewhat bland desert. The interesting part is a bit of a walk away at x:142 y:72 z:102. The area is rather mountainous, and one large mountain in particular is pretty much hollow. There are cave entrances on the side facing the desert. The unusual thing about this cave is that there's a large open room with a grass covered floor at those coordinates - completely dark and a decent walk away from any entrances. As to how the grass got there I honestly have no idea:
You can click the basic "PrtScn" button on your keyboard. Then open up Paint, and click "Ctrl V" to paste that junk into Paint. Then use "Save As", and make sure to save as like a JPG or PNG. Then go to tinypic.com or photobucket.com and find that image that you saved to your desktop and upload it. Then post that URL here.
You can also press F1 when you are in minecraft, that will get rid of the GUI, Then press F2, together, you get a clearer sceenshot.
I saw it, the entire cave is worth exporing, over all i found:
190 Coal
15 Iron
3 Uranium (I am using the Industrial Craft Mod)
Note: That was just a surface rumage of what i could see, any ores I saw, I mined, nothing else.
Edit: Just Dug Strait down from the centre of the grass area, neally all the ores in one place... :ohmy.gif:
Edit2: Make that EVERY ore! First time i have ever found diamond natrually!
Got a screenshot up. As you can see it's very dark, but there's grass growing inside. My guess is it was supposed to be a canyon of some sort, but an overhang generated over top of it and sealed the whole place up. The ceiling is abnormally high and flat, so it makes sense.
Well I wanted to get a picture of it as is, so you can see how dark the cave actually is. Thanks for brightening it, I realize now that some people have darker monitors, bad eyesight, etc. and can't make it out.
Nice!! I found and even a !