Hey to all that can be bothered to post on this topic, this might sound really stupid but where is it?

Near Goodsprings.

Would it be the quarry by any chance? With the almighty DCM (deathclaw mother)

You mean Deathclaw Alley? It's the area surrounding I-15 heading from Goodsprings through Sloan, then eventually to the walls of McCarran Airport. As a newb, you're tempted to take the straightest path until you get jumped by giant radscorps, cazadores, Jackals, and Deathclaws. Then you say screw it and juke to the south until you hit I-85 and head north, then skirt along McCarron to get to Vegas.