4. Not only the heart but also the entrails of Ulu were buried close to the 'door of the house'. These parts are in his torso. The head, on the other hand, was to be buried 'carefully near our spring of running water'.

We can guess this stream of running water could refer to the Milky Way. Orion is close to the Milky Way. Although another mighty stream is close to his left foot:

The inconspicious Heka (λ) is where his head should have been shining brightly. His right arm, from elbow and down, is immersed in the Milky Way.

On the other side of the Milky Way the Gemini twins belong in the solar zodiac, but Orion does not:

Castor and Pollux are looking at each other, like the pairs of musicians inside the Chinese carriage. The upside down Hercules is similarly looking at the face of Ophiuchus (although not so in the illustration by Pardies). The left foot of Castor is down in the Milky Stream, like the left foot of Orion is down in Eridanus. The left foot seems to continue the path of time beyond the gap created by a river.

Further forward is Cancer with twice 4 + 1 = 10 limbs. Its 'left foot' connects it with the left elbow of Pollux, the one who dies (possibly because he has no foot in the Milky Way).