http://knitsi.com/crochet-hats-scarves/199-scarf-crochet-pattern-free

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Finished Size

4 3/4" wide x 65" long (12 x 165 cm).

Yarn

DK weight (#3 Light).

Shown here: Berroco Ultra Alpaca Light (50% super fine alpaca, 50% Peruvian wool; 144 yd [132 m]/1 3/4 oz [50 g]):

#4281 redwood mix (A), #4209 moonshadow (B), 2 hanks each.

Hook

Sizes G/6 (4 mm). Adjust hook size if necessary to obtain correct gauge.

Notions

Yarn needle.

Gauge

14 sts = 3" (7.5 cm); 15 rows = 4" (10 cm).

Scarf

With A, ch 23.

Row 1 (RS): Sc in 2nd ch from hook, *sc in next sc, ch 7, sk next 4 ch, sc in next 2 sc; rep from * across, change to B, turn—3 ch-sps.

Row 2: Ch 1, sc in first sc, *sc in next sc, working in front of ch-7 loops, hdc in next each of 4 ch on foundation ch, sc in next 2 sc; rep from * across, turn.

Row 3: Ch 1, skipping ch-7 loops, sc in each st across, change to A, turn—22 sc.

Row 4: Ch 3 (counts as dc here and throughout), *dc in next sc, ch 3, sc in next ch-7 sp, ch 3, sk next 4 sc, dc in next 2 sc; rep from * across, turn—6 ch-3 sps.

Row 5: Ch 1, sc in first dc, *sc in next dc, ch 7, sk next 2 ch-3 sps, sc in each of next 2 dc; rep from * across, change to B, turn.

Row 6: Ch 1, sc in first sc, *sc in next sc, working in front of ch-3 sps, tr in each of next 4 sc 3 rows below, sc in each of next 2 sc; rep from * across, turn.

Rep Rows 3-6 until scarf measures 65" (165 cm) or desired length, ending with Row 3 of pattern. Change to A. Fasten off. 

Edging Rnd: Ch 1, *sc evenly across edge of scarf to corner, 3 sc in corner; rep from * twice, working across top edge, sc in each of next 2 sc, [working over ch-7 loop, sc in each of next 2 sc, sc in each of next 5 sc] twice, working over ch-7 loop, sc in each of next 2 sc, sc in each of next 2 sc, 2 sc in last sc, join with sl st in first sc. Fasten off. Weave in ends. 

Finishing

Pin scarf to schematic size with rustproof pins, spray with water and allow to dry.