The original Dragon Mountain, by Colin Mc Comb and Paul Lidberg, was a published by TSR in 1993 (back in the heyday of 2e).
While the term has several meanings, the most frequent usage refers to two or more people exploring whether they are romantically or sexually compatible by participating in dates with the other.
Dating is a stage of romantic or sexual relationships in humans whereby two or more people meet socially, possibly as friends or with the aim of each assessing the other's suitability as a prospective partner in a more committed intimate relationship or marriage.
You don't strictly need the original out-of-print Dragon Mountain, though the maps from there would be helpful, and I highly recommend it.
Lastly, it's not necessary but I recommend downloading a copy of Fourthcore's "Undermountain Mechanical Trap Reference Cards" from over here: (once their site is back up and running).
Further, my surmise was that it would not just do the job, but actually be considerably better than the AD&D 2e version given the depth of the 4e hazard and trap system and the Skill Resolution framework's ability to actually mechanically handle functional (i) parlaying with the Kobold tribes, (ii) setting up an effective double cross between them and (ii3) Exploration challenges of the Dwarven Citadel and assuming control of the tech for the PC's own ends.