Add the following to your wakening_x.txt map file if you want a guide:
L 3488.0, 708.0, -193.0, 3469.0, 708.0, -193.0, 127, 0, 0 L 3469.0, 708.0, -193.0, 3469.0, 728.0, -193.0, 127, 0, 0 L 3469.0, 728.0, -193.0, 3488.0, 728.0, -193.0, 127, 0, 0 L 3488.0, 728.0, -193.0, 3488.0, 708.0, -193.0, 127, 0, 0 L 3100.0, 718.0, -193.0, 3125.0, 718.0, -193.0, 127, 0, 0 L 2900.0, 718.0, -193.0, 2925.0, 718.0, -193.0, 127, 0, 0 L 2700.0, 718.0, -193.0, 2725.0, 718.0, -193.0, 127, 0, 0 L 2500.0, 718.0, -193.0, 2525.0, 718.0, -193.0, 127, 0, 0 L 2300.0, 718.0, -180.0, 2325.0, 718.0, -180.0, 127, 0, 0 L 2100.0, 718.0, -180.0, 2125.0, 718.0, -180.0, 127, 0, 0 L 1900.0, 718.0, -170.0, 1925.0, 718.0, -170.0, 127, 0, 0 L 1700.0, 718.0, -176.0, 1725.0, 718.0, -176.0, 127, 0, 0 L 1500.0, 718.0, -176.0, 1525.0, 718.0, -176.0, 127, 0, 0 L 1300.0, 718.0, -176.0, 1325.0, 718.0, -176.0, 127, 0, 0 L 1100.0, 718.0, -176.0, 1125.0, 718.0, -176.0, 127, 0, 0 L 900.0, 718.0, -176.0, 925.0, 718.0, -176.0, 127, 0, 0 L 700.0, 718.0, -176.0, 725.0, 718.0, -176.0, 127, 0, 0 L 500.0, 718.0, -176.0, 525.0, 718.0, -176.0, 127, 0, 0
-3478 is the farthest east I've seen them. I haven't paid too much attention to how far west they spawn along that line.