Why the Shovel is the real mid-game gate
In Sons of the Forest the Shovel is not a convenience tool — it is the item that physically un-buries a third of the island’s progression. The entrances to three bunkers (5, 6 and 7) are under soil, the Shotgun is in a grave, and one of the game’s GPS Locators is on a buried mercenary’s corpse. None of these can be reached before you dig them open, and none of them can be dug open before you own the Shovel, whose item ID is 485.
That is why the route below matters: it is one trip through one cave that converts into four major weapons and three bunker chains.
Where the Shovel is: end of Cave 3
The Shovel is found beside a deceased worker near the far end of Cave 3. Cave 3 is a large system with two terrain gates that stop most first visits:
- The zipline gap near the beginning. Progression is blocked by a large gap crossed using a pre-existing zipline — you do not need to build anything, just ride it.
- The flooded passages near the end. The deeper sections require traversing underwater before the final chamber. Come with the Rebreather or be prepared to manage oxygen in short sprints; the cave is designed around it.
| Cave 3 gate | What blocks you | What gets you through |
|---|---|---|
| Large gap, early | No path across on foot | Pre-existing zipline (ride, don’t build) |
| Flooded passages, late | Long underwater stretches | Rebreather + careful oxygen management |
| Final chamber | — | Shovel beside a deceased worker |
Grab it, then walk the same route back out — the wiki notes the return path through the cave is followable, so you do not need to replan your exit.
What digging opens: every major reward
Once you own it, dig sites across the island become interactable. The wiki groups them into three categories — buried bunker hatches, graves, and small finds — and the big ones look like this:
| Dig site | What you uncover | Why it matters |
|---|---|---|
| Bunker 5 entrance (buried) | Maintenance Keycard, more | The keycard gates further bunker areas |
| Bunker 6 entrance (buried) | Firefighter Axe, more | Heavy melee upgrade |
| Bunker 7 entrance (buried) | Compound Bow, Revolver, more | Two ranged upgrades in one site |
| Shotgun grave | Shotgun | The island’s best early shotgun |
| Buried Mercenary’s grave | GPS Locator on the body | Map tracking for later objectives |
Three of the five rows are bunkers whose entrances are literally buried — you can find the hatches on the map, ping them, and still be unable to enter without the Shovel. That is the pattern to internalize: seeing a dig marker before owning the Shovel is normal; come back later rather than forcing it.
How digging actually works
Digging removes layers of soil from a targeted area until the buried object or entrance becomes accessible. Two limits shape the experience:
- Only designated dig areas excavate. The Shovel does not let you dig anywhere; meaningful objects live in marked spots, so you cannot shortcut to a bunker by tunneling next to it.
- Large objects take repeated digging. Bunker hatches and graves clear over multiple interactions, and each swing costs stamina with slower swings as stamina drains — the same rule that governs its (unadvised) use as a weapon.
As a bonus, casual digging also unearths small rocks, which matters in winter: snow cover prevents picking up rocks and small rocks from the ground, so a shovel-adjacent stash of dug stones is one of the few winter-proof stone sources.
Preparing the run: what to bring
Cave 3 is a traversal cave more than a combat cave, but the trip still fails for predictable reasons. Pack for the two failure modes:
- Underwater gear. The Rebreather plus its fuel is the difference between swimming the flooded section calmly and surfacing mid-tunnel. Check fuel before entering; the swim is long enough that you do not want to manage oxygen on fumes.
- One real weapon, not two. Carry a single dedicated melee weapon for the cave’s regular enemies and keep inventory space free — the Shovel, plus any loot you collect on the way back, needs slots. Our combat guide covers which melee options hold up in caves; our weapons guide covers the ranged upgrades waiting in the bunkers this trip unlocks.
- Light and markers. The route back to the surface is followable, but the cave system is large enough that a couple of GPS pins at the entrance and at the gap save you a detour on the way out.
Save before the zipline. The gap and the flooded section are the two places a death costs real progress, and Sons of the Forest’s survival basics all still apply inside: hungry or thirsty fighters lose stamina regeneration exactly when the underwater section needs it.
The progression chain the Shovel feeds
Because the Shovel opens Bunker 5, and Bunker 5 contains the Maintenance Keycard, the tool sits upstream of the entire maintenance bunker network. The chain reads:
- Cave 3 → Shovel (this guide).
- Shovel → Bunkers 5/6/7 dug open: Keycard, Firefighter Axe, Compound Bow, Revolver.
- Maintenance Keycard → further bunker areas, including equipment you need before the late-game story bunkers (the golden door inside the Luxury Bunker is a separate, later gate).
- Shotgun grave + Buried Mercenary grave can be dug any time after step 1 — do both early, since the GPS Locator makes every later navigation easier.
A practical habit: after your first Shovel session, re-walk your existing map pins. Dig markers you wrote off as “locked” during early exploration are now free loot, and the wiki’s own tip list calls revisiting old dig sites the single most useful thing to do after obtaining it. If you are building a base in the meantime, remember the Shovel’s dig list is also a resource planning list — three bunkers of loot land on your exploration route the moment the tool is yours.
Where this cave run actually fails
- Diving into Cave 3 without a Rebreather. The flooded passages near the Shovel are not optional; plan the swim, not just the walk.
- Fighting through the cave with the Shovel. It swings slower as stamina falls and loses to dedicated melee weapons — keep it holstered in combat.
- Digging one bunker and leaving. Three bunkers, two graves and a scattering of small rocks are all gated behind the same tool; clear the whole list in one pass.
- Ignoring dig sites during early exploration. Mark them on your GPS the first time you see them, so the post-Shovel victory lap is a route, not a search.