Deep beneath the desolate sands of Area 51 lies an old, dust-choked tunnel rumored to predate even the base’s earliest expansions.

Most believe it was sealed off decades ago, but whispers persist of a rusted steel door at its end—one that opens only for those who know the right sequence of knocks.

Beyond it is said to be Sirrus 209, a forgotten underground lab once dedicated to studying mysterious extraterrestrial artifacts—until an alien species, long held captive, exacted its revenge.

In the chaos that followed, the facility was hurriedly abandoned, leaving behind flickering consoles, overturned equipment, and an eerie silence that still hangs in the darkness.

This cool tunnel should be modular, there are no end doors or walls and its designed to connect to other scifi sets and the likes.

The set contains plants and vines, 1 structural arch composed of Ducts, pipes and mechanical parts, its single set that is duplicated in DAZ to minimized polygon count.

The alien specie is just a props and "non-poseable", be sure to check other scifi assets in my library that could be a good addition to this awesome tunnel.