Jimi said:

Hello ...I posted 4 photos seen here of a Skotch pine tree. I then have
three photos of trunk infestation. I live in Southern Saskatchewan Canada
(close to the montanna border) . The tree apears very healthy, however the
holes in the tree have me concerned... Any ideas on what this is and how to
combat it would be a great help. Thank you all for any positive responses..

Sap wells drilled by yellow-bellied sap suckers. You could try using flash
tape to scare them off. Otherwise do what you can to keep the tree
in excellent condition. Most healthy trees can tolerate some sapsucker
damage.
--
Pat in Plymouth MI ('someplace.net' is comcast)

Any technology distinguishable from magic is insufficiently advanced.
(attributed to Don Marti)