Prometheus: Likely inspiration for the Engineer's hibernation mask?

Leading from

 Alex Kzohanov / Gutalin

and

Prometheus: The Space Jockey / The Engineers

bust of engineer with hibernation mask

detail of bust of engineer with hibernation mask

Gutalin's concept artwork

The mask for the engineer while in hibernation with pipes sprouting from the mask like tendrils or spiders legs even. Curiously it resembles the top part of Giger's painting "Behemoth" which is to be found in Giger's Necronomicon. Presumably Ridley Scott used Giger's painting to show what he wanted before the concept design team explored the idea further translating the idea.
(The writer here suddenly made the connection on the morning of October 25th, 2012)

H R Giger's 'Behemoth" (Source Giger's Necronomicon)

detail from H R Giger's 'Behemoth" (source: Giger's Necronomicon)