From the Stitch Description: This pattern is an “evolutionary intermediate”, which is a fancy way of saying that it stands in between one pattern and another in their progressive development. Basket Stitch is here alternated and turned into a check, by working on the half-drop principle. The third step in the series is Clouds and Mountains, which is a Checked Basket Stitch somewhat enlarged and worked in two colors.

This pattern also takes to color contrast very nicely. It is done by working Rows 3 through 6 and Rows 9 through 12 in the contrasting color.

Location of Stitch: Page 104 from A Treasury of Knitting Patterns.