niethil wrote:I thought the caves were part of the official terraforming effort. Weren't they supposed to house facilities for the restricted use of technology allowed by the original chart, and built deep under iron ore deposits for concealment purposes or something ?
Which is very strange, now that I think about it : how is iron ore supposed to stop the neutrinos the Gbabas use to detect technology when the main property of neutrinos is almost inexistent interaction with matter ?
No, Merlin's cave was built to house resources that Shan-Wei and her allies had managed to "lose" during the terraforming process, so that Nimue's PICA would have supplies for whatever purpose she might need them for. At the time, Shan-Wei and Pei Kau-Yung did not know what Langhorne's plans might be--they only knew that they wanted a backup plan just in case. The caves, their resources, and the PICA were that backup plan.
It was built deep under the mountain to hide it from Langhorne, not from the Gbaba. If the Gbaba came to the planet, all was lost anyway. If they got close enough to even try to scan with neutrinos or whatever, then they would be close enough to actually see the colony and would not need such esoteric search methods. The planet would be destroyed and humanity's last hope would be gone.