This guide explains how to profit from shallow Delve by darkness farming: where to Delve, which nodes matter, how to break hidden walls, and how to spend Azurite so you can turn spare Sulphite into consistent fossils, resonators, and occasional jackpot boss drops.

Shallow vs Deep Delve (and why we’re staying shallow)

Delve has two very different play patterns:

• Deep Delve is an infinite scaling challenge where survival and damage checks become extreme. It’s build-gated and punishing.
• Shallow Delve (roughly the 200–400 depth band for most players) is where speed, routing, and node selection matter more than having a perfect character.

This article focuses on shallow darkness farming because it’s low investment, easy to sustain, and heavily rewards knowledge of what to loot and what to skip.

Delve basics you actually need for farming

In the Azurite Mine, you escort the Crawler from node to node. The Crawler creates a moving safe zone of light. Outside that light, the mine’s darkness applies a stacking damage-over-time effect that ramps quickly if you linger.

Many players treat Delve like a simple “follow the cart” loop and still make okay returns. The big jump in profit comes from leaving the path on purpose to grab side chests, fractured Delve bases, and hidden rooms behind breakable walls.

Why shallow Delve is worth doing in 3.28+

Fossils are back where they belong

In recent patches, fossils became much more tied to Delve again. That matters because fossils and resonators are Delve’s signature output, and when the best way to farm them is actually Delve, shallow routes become a reliable income stream for almost any build.

Even “cheap” fossils add up quickly when you’re pulling multiple stacks every few minutes. This is one of the most consistent ways to convert time into liquid trade value without needing scarabs, map rolling, or complicated Atlas setups.

Boss uniques and Delve-only drops can spike your profits

Delve bosses can drop valuable uniques and league-relevant items, including:

• Crown of the Tyrant (often several Divine Orbs depending on rolls and market timing)
• Aul’s Uprising (high variance, can be very valuable)
• Doryani’s Machinarium from Ahuatotli (notable because it’s a unique source and commonly sought for challenges)

On top of that, Delve can drop Delve-exclusive modifier items (especially rings and belts) that can appear fractured. A fractured “curse on hit” ring base is the kind of drop that can be worth more than several full Delve sessions.

It’s cheap, chill, and good XP

Shallow Delve is one of the easiest endgame loops to run while staying mentally fresh. There’s no map device investment and no mandatory juice. You spend Sulphite, you path to value, and you leave.

Depth choice is about balancing speed, safety, and reward density.

• Depth ~145: monster level 83 (comparable to tier 16 map level). This is a natural “baseline” once you want endgame-tier drops.
• Depth 200–300: still feels similar to typical tier 16 difficulty for many builds, but with better node density and rewards over time.
• Depth 300–400: starts feeling like harder, heavily-modded mapping. Still very profitable, but mistakes in darkness or on node bosses are punished more.

If you ignored Delve while leveling, you can use the mine’s early progression to drop down quickly, then beeline to 145+ and start farming where the item level and rewards make sense.

What to farm: node priority for profit

Not every node is equal. Shallow Delve becomes dramatically better when you stop running “everything” and start running only what pays.

1) Fossil nodes (top priority)

Fossil nodes come in two broad categories:

• Generic fossil caches that drop a spread of fossils. Even when they’re not premium fossils, the volume makes them worthwhile.
• Biome-specific fossil nodes that can guarantee high-value fossils depending on the biome and node type.

In practice, you want to mouse over fossil icons on the Delve map and learn which named nodes are worth detouring for. Some are slow and low value; others are consistent hits that justify routing around them.

2) City zones and boss nodes (high priority)

City areas are marked by a distinct boxed region on the Delve map. Inside, you’ll find:

• Treasure rooms with multiple chests (good quick loot, don’t overstay for respawning monsters)
• Boss nodes (the real reason to care about cities)

As a rule, anything inside a city box is worth considering, but boss nodes are the most important because they can drop high-value uniques and Delve-specific items.

3) Elemental/chaos “contains X items” nodes (solid value)

Nodes that reward themed items (cold, fire, lightning, chaos) are often better than they look because they can include relevant fossils and also have a higher chance of producing useful Delve bases with strong affix themes.

They’re not always as good as pure fossil nodes, but they’re efficient filler when they’re on your route to a city or a premium fossil reward.

Take a look at: Kingsmarch ore shipment farming to sustain Sulphite and upgrades

4) “Contains items” (situationally good)

Generic item nodes can surprise you with resonator chests. If you notice a pattern of resonators dropping well for you, these are reasonable to include when they don’t slow your route.

5) Nodes you can usually skip

Many side mechanics (essences, beasts, abyss) are fine, but they’re often not the best use of Sulphite if your goal is Delve profit per minute. Run them when they’re on the way to something better, or when you specifically need that resource.

Hidden paths are one of the biggest “knowledge checks” in Delve. If you learn to spot them, you’ll access extra nodes, bosses, and loot without needing more Sulphite routes.

The connection rule that reveals hidden paths

Delve nodes connect only in cardinal directions (up, down, left, right). Importantly, nodes will have 1, 3, or 4 connections on the map. They do not naturally form a simple 2-connection “corner” without another connection hiding behind a wall.

So when you see a node that visually looks like it should have a third or fourth connection but doesn’t, that’s your cue: a breakable wall is nearby.

Practical method

• Enter the node and step into the darkness in the direction where a missing path should exist.
• Look for a breakable wall and use dynamite.
• Re-check the Delve map: the new connection should appear, revealing the hidden route.

This technique is especially useful for reaching boss nodes that are “one step away” from a visible dead-end.

Azurite spending: upgrades that make darkness farming easy

Azurite (from the many Azurite fissure/cavity nodes) has two main uses: upgrading your mine systems and buying items from Niko.

Step 1: Don’t waste early Azurite

Start by putting a few upgrades into Sulphite Capacity so you don’t cap constantly while you’re still setting up. After that, prioritize the stats that let you survive and loot in the dark.

Step 2: Upgrade for darkness farming

• Darkness Resistance: reduces the damage you take while outside light.
• Light Radius: makes the safe area larger and reduces “panic moments” when repositioning.
• Max Flares: lets you chain multiple side trips without resetting.
• Max Dynamite: essential for breaking multiple walls in one run.

For shallow routes, evenly leveling these tends to feel best. The goal is to make darkness excursions routine rather than risky.

Step 3: When upgrades feel comfortable, buy resonators

Once your darkness stats are in a good place, Azurite becomes a currency engine. A common, steady option is buying Primitive Chaotic Resonators from Niko and selling or using them for crafting.

This is also where having a stash of PoE orbs helps: fossils and resonators often turn into immediate gear upgrades if you can afford to iterate crafts instead of stopping after one attempt.

Take a look at: other budget farming strategies if you want variety alongside Delve

You don’t need a deep-delving monster, but you do want a character that can move quickly and recover from mistakes.

What matters most

• Movement speed and smooth traversal (you’re routing constantly)
• Sustain (regen, leech, or reliable recovery) to survive darkness stacks briefly
• Baseline tankiness so random rares don’t delete you while you’re looting
• Phasing or strong avoidance feels great in narrow tunnels

Toxic Rain Pathfinder is a classic shallow Delve performer because it combines speed, sustain, and practical toughness while staying effective on modest budgets. If you’re building specifically for Delve income, that archetype is a proven starting point.

Sulphite: how to sustain Delve runs efficiently

You spend Sulphite to move the Crawler between nodes, so your Delve income rate depends on how easily you refill it.

In general:

• Higher quantity maps yield more Sulphite from deposits.
• Atlas passives and mining-related bonuses can multiply gains.
• If you’re running a mapping strategy that converts or redirects Sulphite value into other resources, you may need to adjust if your goal is Delve uptime.

If you want to Delve heavily for fossils and boss nodes, prioritize setups that keep Sulphite high so you’re not forced back into maps too often. This also helps keep your profit curve smooth, especially early league when league start PoE currency decisions matter and you’re trying to stabilize upgrades without overcommitting to expensive mapping juice.

Execution loop: a simple shallow darkness farming routine

Use this repeatable loop to keep your runs fast and consistent:

• Step 1: Open the Delve map and plan a short chain (3–6 nodes) that hits at least one fossil node or a city region.
• Step 2: Run the node normally, but detour into darkness for nearby chests and breakable walls when the layout suggests hidden paths.
• Step 3: Loot quickly and move on. Don’t camp endlessly respawning monsters in city rooms.
• Step 4: Bank fossils/resonators frequently so you can keep moving without inventory friction.
• Step 5: When Azurite piles up, buy resonators once your mine upgrades are comfortable.

When done correctly, shallow Delve becomes a steady stream of crafting materials and trade goods. If you’re short on resources for upgrades, some players top up with Path of Exile currency so they can keep their character power aligned with their chosen depth, rather than stalling out after a bad streak of drops.

Frequently Asked Questions

What depth should I start shallow Delve farming at?

Aim for depth ~145 once you can comfortably clear endgame content, since that’s where monster level 83 begins. Many players then settle into 200–300 for efficient farming.

Is darkness farming dangerous without a specialized build?

It’s manageable if you invest in Darkness Resistance, carry enough flares, and keep excursions short. Knowledge and upgrades matter more than raw DPS in shallow depths.

Fossil reward nodes and city boss nodes are the biggest long-term earners. Element-themed item nodes are good filler when they’re on your route.

How do I know where a hidden wall is?

Look for map nodes that appear to have an “impossible” two-connection corner. Then search in the missing direction in the darkness and use dynamite on the breakable wall.

Do I need to trade a lot to benefit from Delve?

Trading helps because fossils and resonators are highly liquid. If you’re planning big crafts or upgrades, having extra PoE trade currency available can smooth out unlucky streaks.