Folded quilt block pattern?

I'm looking for a pattern that looks like the fabric is folded? I have seen it done in a Log Cabin but can't remember what it's called. Has anyone done something like this? Not even sure if I'm explaining it right either. :D

Thanks

is this along the lines of what you are looking for?
http://www.cotton-picking.com/FreeFoldyStuff.htm

there are several projects here using the folded method

Foldy Stuff.com . Several patterns. I have ordered and used patterns many times,