Lost template

Do you remember this design from years ago? I had printed it onto cardstock and cut along solid lines, folded along the dotted lines, then it took forever folding hills and valleys. I know it was a .....to make, somewhat fiddly and time consuming but I thought it did look good when finished. I just can't find my copy anywhere and I wouldn't know where to start looking on the net. Apart from using it on an insert like in this photo I'm not sure what else it can be used for. Any ideas please?