Crawling in my Sand can be obtained if you choose the side of the NCR and come close to the Wrecked Sand Crauler.
Trader Sonja from the Hub appeals to you and offers to join her group and help in defense of the Crawler from raiders. You have a few minutes to prepare for the attack, it is possible to hack the computer console (hard difficulty) and reboot turrets AI for activate.
If Sonja survived the battle, you can trade with her.
Behind the collapsed bridge is a lot of bulk MFC.
In the mod files there is an unfinished quest "Carrion" for the opposite side, which must give Tanok, the raider of the Black Vultures tribe.
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