( 161, 73, 140 ) Copy/waypoint 161.32, 72.84, 140.46 This ribbon will constantly lead you to "Grumpy Jack" inside the cabin. the seeping shadow is NOT behind this cabin. Turn back and go up the slight hill at ( 126, 58, 130 ) Copy/waypoint 125.89, 57.99, 130.09 then follow the ribbon to the seeping shadow behind the tree.
( 155, 65, 25 ) Copy/waypoint 155.47, 65.37, 25.21 Follow the river to ( 144, 28, 269 ) Copy/waypoint 144.14, 28.49, 269.02 then follow the path to ( 113, 58, 109 ) Copy/waypoint 113.26, 57.70, 109.19 Go between the two cabins then look behind the one on the left.
( 143, 62, -299 ) Copy/waypoint 143.13, 61.80, -299.14 This is at the base of a tree just off of the side of the river. Follow the river to ( 146, 59, -281 ) Copy/waypoint 146.21, 58.52, -281.15; then look north for the tree in front of you.
( 177, 39, 331 ) Copy/waypoint 177.13, 39.13, 330.65; This is in a crevice just off of the river. Follow the river to ( 140, 26, 289 ) Copy/waypoint 139.67, 26.28, 288.58; and look SW to where the two hills meet.
( 261, 89, 1 ) Copy/waypoint 261.12, 89.42, 0.72; If you can't fly - Follow the river to ( 377, 47, -196 ) Copy/waypoint 376.87, 46.87, -196.03 go up and around to ( 315, 89, -110 ) Copy/waypoint 315.29, 89.23, -109.85, cross the bridge at ( 312, 97, 19 ) Copy/waypoint 311.65, 97.22, 19.11 then go behind the tree (you can't get to it from the rocks in front of the tree) and look down, the seeping shadows should be on the ledge.
( 279, 90, -133 ) Copy/waypoint 279.03, 89.72, -133.13 If you can't fly - Follow the river to ( 377, 47, -196 ) Copy/waypoint 376.87, 46.87, -196.03 go up and around to ( 315, 89, -110 ) Copy/waypoint 315.29, 89.23, -109.85, cross the bridge at ( 312, 97, 19 ) Copy/waypoint 311.65, 97.22, 19.11 then go left/North.
( -218, 10, -452 ) Copy/waypoint -218, 10, -452; The "X" for this one shows up on top of the purplish/pinkish rocks. To get to it, jump into the Umbral Sea and swim to around ( -412, -0, -517 ) Copy/waypoint -412.34, -0.19, -516.54; then head West - southwest.
NOTE: Cast one Advanced Lightning Tracker Mach II at a time. Once you cast one, a little bug will fly off and you will be able to see where it went on your map. After collecting one, change your location like the other side of the river or up another hill. No need to zone out and back in again.
Note: You don't "loose" a tracker, when the tracker doesn't find any nearby