It is here that reports from Argon Federation scouts begin to conflict with the She t'Tharka passages found above. No evidence now exists of any conflict started against the Split colonists of Tharka's Cascade, and though one passage states that the planet was home to a colony of around one thousand Split, observations made of the planet from space seem to suggest far more activity. Scouting reports have even claimed movement on the planet's surface, from some kind of machinery - however, these reports have been unable to be verified.
One of the least active Xenon sectors in the region, Tharka's Cascade XVII serves primarily as a transit route for Xenon warships leaving Matrix #79B for Tharka's Cascade XV and the systems beyond.