Crown aperture
upper opening / crown wheel
The crown station completes the four principal stations used in this compact tummo map. The point is drawn as an upper aperture in the front silhouette because the subtle-body image is not reducible to a gross anatomical structure.
Point 5 of 5 in Tummo / Caṇḍālī Inner Heat
Cross-tradition overlaps
- Crown aperture ↔ Crown — visionary aperture (distance 0.005)
Sources
Six Yogas of Nāropa (Nāro chos drug) (primary_canonical)
Sections on gtum mo, the four cakra stations, the central channel, and the red inner fire; wording and chapter divisions vary among Tibetan recensions.
Tsongkhapa, The Six Yogas of Naropa (secondary_translation)
English translation and practice commentary on the tummo visualisation, channels, winds, drops, and four principal cakra stations.