We today interpret the inside triple spiral as an "S" with a tail at the back. The upper spiral is the Realm of Sky, the lower spiral is the Realm of Sea and between them at the back is the Realm of Land, all in balance. On the big stone outside the chamber however there is a different triple spiral. Its still an "S" but the back spiral between the upper and lower spirals only connects to the upper spiral.
Is the message as follows - Outside the energy is with the Sky Realm, but the tail of the back spiral (Realm of Land) is aimed or ready to join the Realm of Sea - now do some Sun Magic with Quartz in the roofbox on the start of the shortest day and the back spiral (Realm of Land) will connect to the Realm of Sea. Is this temple an energy switching device from dominant Sky to dominant Sea in terms of activating the grid?
The two triple spirals are very similar - it is only a slight rotation of the back spiral that disconnects it from the upper spiral and re-connects it to the lower spiral. It needs the Quartz in the roofbox replaced to make it work - how does this interpretation sit with you?
Please note - this short essay is for those who are students with us, we know that each symbol can be seen as 6 spirals, the red and yellow colours were my choice - I'm just provoking others to observe whats there to question why.