The Mojave Conglomerate (and the Commonwealth)

This section of the Rookery is established "Rookery Year 8" (shortly after Aretha bonded to Silence) in the same era that the Hippies and Carnies arrive to Lane Mansion. It rests several hundred miles west of the Rookery itself, in the territory formerly known as Nevada. The complication, however, is that with the numerous Portal Storms and other events having ravaged this world, along with Local Lane's predisposition toward chaotically mixing things up now and then, the land itself exists simultaneously in two disparate dimensions. The Rookery, and what's known as Vault Earth. That world has no formal title as such, but as its primary technological corporation was Vault-Tec it stands to reason to call it that.

The Eastern contingent of this dimension is known as the Commonwealth, formerly Massachussets, and the Capitol Wasteland, which came under extensive control more recently (in their timeline). Between Aretha and Levi it's pretty clear that Vault Earth is in good hands, given that Aretha has been cloned (twice) and her 'sisters' help with the duties out there. The Commonwealth is less likely to have actual dragons residing anywhere, as there are considerably more people in the way that would be far more likely to want to eat them, than those out west in the desert. However, he really wants them, he has a lot more territory to cover, and there are limited resources for the Institutes teleportation technology to reach much beyond their current shown limits. Of course it's also entirely possible if not obvious that this Levi is also, at least in another dimension, The Outsider, so there are a lot of weirder options available to him than he's admitting to. (Eventually the Wakefield Settlement and Gulper Island Synth Settlement are established, that's where they will go!)

However back here, in the wild, weird West, the MoCon is ideal for extensive dragonry work. Its terrain echoes that of Black Mesa, but also includes mountains and larger scale ruins. It is also the largest single patrolled location in the Rookery by RY10, too bad it's technically not ON the Rookery...

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Individual locations

Mojave Conglomerate spots are located across the entire desert area, with its northern border

Nellis AFB (use bm exterior desert) and Searchlight Airport

Hoover Dam and Cottonwood Cove (for the water/mud dragons)

Lucky 38 and the Strip (Aretha's home)