We look at the basic origami valley and mountain folds here. We show you step by step photos and directions on how to make the basic origami valley and mountain folds.
Uncategorized – Page 2 – natural origami
Yoshizawa–Randlett system - Wikipedia
BASIC ORIGAMI FOLDS - Mountain and Valley Folds
File:Origami symbol valley fold.svg - Wikipedia
key to line types and symbols in fold diagrams
Folds
Folding Origami Envelopes - A Creative DIY Project
What are Valley and mountain fold s?
How to Make a Mountain Fold (Origami): 4 Steps (with Pictures)