Go into the mine
Explore the side shafts
Also, ask someone if the robots have special forging techniques for making weapons, staves, etc. They must have some interesting technologies that normal humans can't readly muster. Ask about special (non heartmetal) materials they've found in the mine - any weird gems, ores, etc?
Also ask if they know where heartmetal comes from and why it spawns robots.
The last one you get a simple straightforward answer to. Heartmetal falls from the sky as meteors. As to why it's all robots, however, you get a series of polite refusals. You can't even gather if they know the answer or they're just hiding it from you. Argh.
Anyway, time to go down the shaft. The huge funicular does have a plain emergency ramp on both sides, but there are two elevators, moving up and down on a schedule, with a series of lights signalling when to move. It turns out the signal device is another robot, and it greets you and chats mildly. Unfortunately it's mounted too high for either of you to touch. Well, unless you go dragon. Restraint roll (3). Ahh, dang it. You go dragon, climb up the pole the signalbot is mounted on, and talk to it.. face-like lights to snout. The bot doesn't run away, but perhaps it's only because he doesn't have legs. You do interrupt the signals for a moment before Uncle and Sessha shout you down, in front of the two or so dozen other robots going down with you.. humanoid, bulk carriage bots, and some others that defy obvious description, ones made for slowly crawling on the ground, one that is just two human-sized wheels, and so forth. All going down.
There's a big clunk, a hiss, and the far door opens up, so you can see the spiral of the shaft. Further below the surface, the rock is all striped and patterned, all pretty colours. Uncle comments on how it's from the shattering force of the meteor, how it mixed the rocks up and changed other ones, with the huge calamity. Far below where you could see from outside, you can make out dark holes in the rock.. they must be the side shafts. The bottom itself isn't clearly in view from up here, it's too far down. The party is the only humans you see here.. just robots, and one dragon.
Wait, there might be a fight waiting. You revert from your standard Venom Whelp. Even after all this time you don't really notice changing.
Now that you're a bit taller again, as the shaft starts moving, you can see another large building. It was hidden from you by the main entrance, but from here you can see it for about a minute before you go down too far. A big factory, with squat, short smokestacks and grim looking gray barriers that look like weird glass or something. Heat shimmers above it in places. And it's behind a more serious wall, patrolled by a few huge robots moving slowly.
That must be the heartmetal forge.
Anyway, going down.. after a full fifteen minutes of slow, spiralling descent, you can make out the other platform coming up towards you. The ground is still indistinct, but you can start to see things moving in the odd, gray-brown surface below, and you're getting close to the first of the side shafts. As you approach it, the rail on the platform facing the edge of the rock raises up, lowering a yellow-marked platform from above, which comes down to stick out to the right of the platform, hanging near the edge of the rock. You ask about it and one of the robots says that's to pick up anyone heading to the side-shafts.. you step on it, it warns you with three blasts of a horn, and then it falls much more quickly towards the next side shaft. It'll then stop there long enough for you to get off, and then get picked back up by the funicular again, to get ready for the next shaft. It's so the big slow ones can get off without the elevator having to stop.
Huh. Interesting.
Are you going to get off at a side shaft near the bottom, or one higher up? Sessha thinks the lower down ones will have stronger enemies, but they will also be patrolled much more, so will be less likely to have enemies at all.