As the Río de Tialoc winds from the city and into the Taper Shelves, it carves a path through the Puniceas Canyon. On one side is a large, flat platform that serves as the primary grounds for the Crux Grotto pack - hunting the small lizards or scorpions among the vegetation, fishing, etc. The open platform is several hundred meters across, bordered by the red cliffs of the canyon.

On the cliff face bordering the open platform of the Pass are several openings, the wide mouths of the Intorqueo Vena, the Twisting Veins. These caves, while wide at the openings, quickly taper down into small, winding caverns that lead through the cliffs, often opening into large rooms. This makes for the primary denning site for Crux Grotto, as they are quick to maneuver through - if one knows their way around. Those unfamiliar to the cave system quickly get lost.

Parum Crescent, "Little Moon", so named for the crescent-shaped ridge that is accessible, is not little at all. While the path is hard to traverse due to being so narrow, it actually winds in a wide arc across the Taper Shelves. Due to the difficulty of traversing it, those who have not braved the ridge before often come out lethally wounded, or end up lost. The only wolves known to be able to traverse the crescent safely are the Cruxers.