Will also be plenty of places to PoE currency | Forum

You can plot your own course using this Subterranean Chart, which indicates different kinds of experiences, rewards, and biomes so you've got a rough idea of what you're getting into. As soon as you've chosen your next destination, you follow the Crawler there, fighting enemies along the way, looting treasure that's close enough to the cart to securely catch, and confronting a tough final tide before the tunnel segment is complete.

Leave the protection of this Crawler's mild and you will take damage, sufficient to kill you in seconds. But there will also be plenty of places to PoE currency research away from the cart's illumination -- so how can you get that loot without succumbing to the abyss? It's possible to equip Flares that can temporarily light up new regions from the Delve, letting you explore outside the Crawler's route and acquire more treasure. The trade-off is simple: if your Flares burn out then you are doomed.

The more you travel in the Delve, the more troubling the darkness is, so you will want to update the Crawler's mild accordingly. You will also encounter new enemies using EMP-like abilities that can disable your lights, so make sure you have some spare Flares to buy poe exalted orbs combat this.

Flares and Dynamite