Krulmuth
The Krulmuth system was a planetary system in the Alpha Quadrant. (Star Trek: Section 31)
One of its planets was Krulmuth-B, home to the Krulmuth-B portal. (SNW: "Those Old Scientists")
In the early 24th century, the location of Krulmuth was labeled in a chart used during a Section 31 Alpha Squad briefing. (Star Trek: Section 31)