Erangel’s Hidden Treasures: How to Find Secret Underground Rooms in PUBG Mobile

Looking for secret underground rooms in PUBG Mobile’s Erangel? The useful clue is usually a concealed entrance and an access item—not a four-digit PIN. In the secret-basement setup described by players, you search buildings for a Secret Basement Key, find a covered hatch or locked entrance, remove any breakable obstruction, and use the key at the actual door. Specific entrances, names, and availability can differ by game version or selected mode.

Important correction: There is no reliable official evidence for the frequently repeated PINs 0571, 6523, 4192, and 4895, or for a fixed list of four keypad bunkers at those claimed coordinates. Do not spend a match entering these numbers. PUBG MOBILE has documented an Access Card-locked Supply Warehouse on Erangel, while player reports describe key-opened secret basements. These should not be conflated with one another or with secret rooms in the separate PC/console game, PUBG: BATTLEGROUNDS.

Which hidden room are you trying to open?

“Secret room” is used loosely in guides and videos. Check your mode and the item in your inventory before following a route.

For the original Supply Warehouse announcement, see the official PUBG MOBILE Version 2.3 patch notes. For the current themed map changes, see the regional publisher’s Version 4.6 notes, dated September 7, 2026.

Where to search for Erangel secret underground rooms

Start with small compounds and buildings near established Erangel landmarks, not the center of an open field. Community-shared mobile maps and player discussions have pointed to rooms around Georgopol, Stalber, the Gatka area, the Farm/Mylta side of the map, and Sosnovka Military Base. Those are search regions, not an independently verified list of exact, current 4.6 door coordinates.

If a guide labels a spot as “Georgopol North” or “Lipovka Bunker” but you cannot find a matching entrance, treat the label as unverified. Erangel layouts and limited-time modes evolve; a location map made for PUBG: BATTLEGROUNDS can also lead a PUBG MOBILE player to the wrong building.

How to find and open an Erangel secret basement: 5 steps

1. Select the appropriate Erangel mode and land with an exit route

Before dropping, check whether you queued for a standard Classic map or an event variant. Plan a landing near a group of buildings rather than directly on an exposed entrance. Identify a nearby road, cover, and potential vehicle so you can escape if the zone pulls away.

2. Search ordinary loot thoroughly for the correct access item

Pick up a weapon, armor, and healing supplies before hunting for a key. Search floors and lootable buildings for an item identified as a Secret Basement Key; do not assume that every compound has one. If the item is shown in your inventory, read its name carefully. An Access Card associated with a special warehouse is not automatically interchangeable with a basement key.

Some player-reported versions place a clue or nearby room marker on the map after picking up a key. Treat that marker as navigation assistance, not proof that only one room can accept the item. If no key turns up, continue playing rather than repeatedly checking one supposedly guaranteed spawn.

3. Approach a candidate building and clear the surroundings

Move from cover to cover. Listen for footsteps and shots, check upper windows, and watch the approaches your team cannot see. A basement entrance can become a trap if another squad follows you into a narrow hallway. In a duo or squad, keep one player watching outside while another verifies the entrance.

4. Identify the entrance and separate the cover from the lock

Player guides describe some secret basements as having a wooden hatch or planks, sometimes marked with a red X. Inspect the floor, ground outside a structure, or an access stairwell where the relevant room type exists. When a wooden barrier is destructible in your mode, remove it with ordinary permitted in-game damage while watching for enemies attracted by the noise. A revealed metal door may still need a key. Shooting a reinforced locked door repeatedly is not a substitute for the correct access item.

5. Use the interaction prompt, loot selectively, and rotate away

Once you reach the actual locked door, move close enough to see the available interaction. Use the matching key or access item if prompted. If there is no unlock action, reconsider the room type, whether the cover has been removed, or whether your mode supports it. Never rely on an internet PIN list when the game is asking for a key.

Inside, sweep corners first and prioritize what improves your survival: intact armor, useful attachments, ammunition compatible with your guns, healing, and throwables. A secret room may contain valuable gear, but specific weapons and level 3 items are not guaranteed. Leave before the next safe-zone transition makes the escape expensive.

How to get the most value without losing the match

• Choose survival over rarity. Do not cross an exposed field for a possible upgrade when your current loadout is already capable of winning fights.
• Keep a lookout at the entrance. Key animations, narrow stairs, and loot menus can leave players vulnerable.
• Avoid inventory overload. Enough ammo for your current weapons and enough heals for the next rotation matter more than carrying unused attachments.
• Check the zone before entering. If you need a long drive to safety, the time spent opening a vault may not pay off.
• Do not confuse modes. An event-only puzzle, a Classic secret basement, and a Metro Royale loot site may have completely different rules.

Why you cannot find or unlock a secret room

Frequently asked questions

Do Erangel secret underground rooms have fixed PIN codes?

No verified current PUBG MOBILE source establishes the four codes repeatedly circulated online. The better-supported access methods use a key or, for the historically documented Supply Warehouse, an Access Card.

Does one Secret Basement Key work at any underground room?

Player discussions report that the key can work at more than one eligible Erangel secret-room entrance and that a highlighted marker is often simply a nearby suggestion. This is community-reported behavior, not a guaranteed rule for every future mode or patch. Check the interaction prompt at your chosen door.

Can I expect an AWM, Groza, or flare gun inside?

Do not plan around a guaranteed specific drop. Treat the room as a chance to improve the squad’s equipment, not as a reliable spawn for an individual gun or scope.

Are hidden compartments in the Version 4.6 Hunter Guild the same as underground basements?

No. The Version 4.6 announcement identifies concealed compartments behind furnishings in Hunter Guild areas at Stalber and Sosnovka Military Base. That is a separate themed mechanic, not evidence that a keypad-controlled bunker exists at either site.

Quick checklist for your next Erangel drop

Confirm mode → land near cover → loot a weapon and protection → look for the correct key → inspect plausible small compounds → clear the area → open the cover and lock separately → take useful loot → rotate with the zone. This route is more dependable than chasing unsupported GPS coordinates or memorizing fictional PINs.

Verification note: This guide reflects the publisher’s documented Supply Warehouse and Version 4.6 themed mechanics alongside clearly identified community observations about basement keys. An official, complete, location-by-location list of current PUBG MOBILE 4.6 secret-basement entrances was not established from the sources reviewed; exact in-match entrances should be verified rather than presented as fixed facts.