This is a typical crocheted sc ripple. A very good project to use up scrap yarn if you have enough to do two rows, or you can do it all one color or any combination of colors that you desire.
I call it peaks and valleys because it reminds me that the God of the mountain (peak) is the same God when you're in the valley. No picture yet, since it's a WIP and not very far along yet.
Note: To customize the size of the afghan, the starting ch is a multiple of 23+3. Chain a multiple of 23, then add 3 more to the end of it. Work until afghan is the length desired.
WW yarn (I used RHSS) Sufficient to finish the afghan.
Crochet hook size 7.00 (Between a K and L, either will do)
Yarn needle to work in any loose ends.
With your MC or starting color, ch 187.
Row 1: Sc in 2nd ch from hook, sk 1 ch, *sc in next 10 chs, 3 sc in next ch, sc in next 10 chs, sk 2 chs, rep from * across to the last 2 chs, sk 1 ch, sc in last ch. 8 points.
Note: Work in the BLO from now on.
Row 2 and all other rows: Ch 1, turn. Sc in first sc, sk 1 sc, *sc in next 10 sc, 3 sc in next sc (top of point), sc in next 10 sc, sk 2 sc, rep from * across to last 2 sc, sk 1 sc, sc in last sc.
Repeat Row 2 for pattern, changing colors as you like. Always change colors by finishing the last half of the last sc with the new color by drawing it through the last two sts. Cut old yarn, leaving a long end for sewing in.
I'm doing one using off-white as the MC and bits and pieces of other colors as CCs. 12 rows of MC, then 2 rows of CC, beg and end with MC.
Note: For a scrapghan you will want enough of each color to do at least two rows (1 rib), it looks better if you change colors at least every two rows. For wider stripes, keep your row count even (2, 4, 6, etc) so that color changes happen on the same side of the afghan and it looks more consistent.
BLO-back loop only