Missing Optical Disk A Grounded 2 Guide
28 September 2026 | 130
Tracking down essential tech upgrades in Grounded 2 often requires diving into treacherous underground territories across Brookhollow Park. Among these valuable collectibles, Missing Optical Disk A provides crucial base-building recipes that significantly boost your survival capabilities. Knowing the precise route to navigate the subterranean caverns will save you valuable time and keep your character safe from hostile bugs.
Locating the Toxic Anthill Entrance
While your in-game map marks the general vicinity of Optical Disk A, reaching it requires venturing deep into the Toxic Anthill. You should head toward the northern boundary of the Snackbar Front near the Picnic Table area to locate the hidden subterranean entrance. Keep an eye out for a distinct aerosol can resting right outside the tunnel opening, which confirms you have found the correct path.
Navigating Through the Subterranean Tunnels
Once you step inside the cavern opening, begin descending deeper into the dark, winding pathways filled with hostile cockroach nymphs. Follow the main cave tunnel straight down until you enter a spacious subterranean room featuring discarded aerosol cans alongside a half-eaten doughnut. Turn immediately to the right at this clear visual landmark to navigate directly toward the main nest chamber.
Facing the Cockroach Queen Den
Proceeding down this right-hand path brings you directly into the lair of the formidable Cockroach Queen. Adventurers do not necessarily need to slay this massive boss to claim the prize, as quick movement allows you to sprint right past her. However, defeating this creature rewards you with the powerful Gloom Skewer weapon, making the fight highly worthwhile for well-equipped players.
Claiming Optical Disk A and Unlocking Rewards
To collect your target item, move past the boss area toward the right side of the cavern where a fallen scientist body rests. Inspecting the corpse grants you Missing Optical Disk A, which can then be brought to a Ranger Station for analysis. Turning in this disk unlocks essential structural recipes including fortified palisades, acorn staircases, and sturdy terracotta building components.