The Rainbow Arch
M/F · Vaginal penetration · Side-lying
Posed figure
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Keypoint template
Attributes
- Position family
- One-on-one
- Primary act
- Vaginal penetration
- Partner arrangement
- Side-lying
- Penetration type
- Vaginal
- Facing
- Head to toe
- Dynamics
- Grinding
- Support / surface
- Flat surface / bed
- Participant count
- Two
- Composition code
- M/F
- Source medium
- Illustrative
- Physical difficulty
- Advanced / athletic
- Prevalence in adult media
- Niche
- Intensity tier (compliance)
- Explicit
Common camera framing
Description: Both partners lie on their sides pointing in opposite directions, the receiving partner arched backward so the hips meet while the heads are at opposite ends. The arch is what closes the distance, and the curved body line is where the name comes from.
Variations: Depth of the arch, whether the upper leg is raised or left down, and how far the shoulders rotate toward the mattress to relieve the spine.
On camera: An overhead shot is the only framing that makes the opposed orientation obvious. In profile it can be mistaken for an ordinary side-lying position.
AI design considerations: Two side-lying figures with heads at opposite ends and a pronounced backward curve in one spine. The head-to-toe orientation is the identifying fact and is routinely lost when a render mirrors one figure instead of reversing it.
Historical provenance
Where this position appears in historical sex manuals, erotic art & literature · full timeline →
- The rainbow archArab–Berber (Maghreb) →
The Perfumed Garden of Sensual Delight — Muhammad ibn Muhammad al-Nafzawi · 15th century CE
Partners lying on their sides in opposite directions, the receiving partner arched back.
Related positions
Part of the Erotic Pose Catalog open dataset · CC BY 4.0 · keypoints are idealised COCO-17 templates.