The 30 March Spyder clue, when decoded, refers to a "lower right bolt" somewhere in the Mechanical Age. I've collected a number of candidates here, along with one example of what not to look for (a screw).
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| The outside control panel | Two "lower right" bolts? |
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| Wooden bolts (Achenar's room) |
Bolts coming out of wall A crossbow arrow = bolt (Achenar's room) |
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| Bolts on the simulator
column (Achenar's room) |
Screws, not bolts (Elevator rotation control panel) |
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| Bolts coming out of floor (Top floor, spotlight base) |
Bolts coming out of
pedestal (Fortress rotated 180 degrees) |
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| Fortress rotation control (Top floor) |
Panel below fortress
rotation controls (Top floor) |