Message #201428

[Artemis]

Garcea suspected that the Tenerian had made most of the stone tools. Nearly three-fourths of them were hewed from a strange green volcanic rock that bore a glasslike sheen and yielded razor-sharp edges when fractured. The abundance of green flakes on the dunes indicated that the Tenerian spent long periods of time at Gobero making and sharpening their tools. "But it's possible they lived part of the time at the place where they quarried the green rock," said Garcea. One of the Tuareg said he had seen big boulders of it in the Aïr mountains, some hundred miles to the northwest.