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One of Elden Ring’s most overlooked strengths is its labyrinthine underground world. Beneath the surface of the Lands Between lies a vast, interconnected network of hidden cities, deep rivers, ancient ruins, and mysterious enemies—and some of the game’s rarest items. If you’ve been sticking to the surface, you’re missing out on powerful gear, game-changing spells, and unique collectibles. Here are 9 rare underground items that are worth the descent, and tips on how to find them.

1. Moonveil (Gael Tunnel, Caelid)

This katana has gained legendary status in the Elden Ring community. Found in Gael Tunnel, which connects Caelid to Limgrave’s border, Moonveil deals devastating magic damage and scales with Intelligence. Defeat the Magma Wyrm at the tunnel’s end to claim it. A must-have for any spellblade build.

2. Ancient Dragon Smithing Stone (Various Late-Game Areas)

These ultra-rare stones allow you to upgrade special weapons to +10. A few are hidden in deep underground locations like Nokstella and Mohgwyn Palace. Make sure to explore thoroughly and defeat optional bosses—you may only get one per playthrough, so use it wisely.

3. Finger Slayer Blade (Nokron, Eternal City)

Essential for progressing Ranni’s questline, this blade also holds lore importance. Found in a chest in Night’s Sacred Ground after defeating Radahn and gaining access to Nokron, it’s not equipable, but its discovery marks a major story beat.

4. Great Ghost Glovewort (Nokstella and Deeproot Depths)

To max out Spirit Ashes, you’ll need these. They’re extremely rare and only found in late-game underground zones. Nokstella’s palace ruins and the roots of Deeproot Depths are good places to search. These materials are perfect if you're looking to build a top-tier summon army without grinding cheap elden ring runes endlessly.

5. Rivers of Blood (Church of Repose, Mountaintops of the Giants)

Technically not underground, but often overlooked during subterranean exploration, this katana is associated with the Blood Flame incantations. If you missed it, backtrack—its bleed scaling and style make it one of the most satisfying weapons in the game.

6. Wing of Astel (Ainsel River)

This unique curved sword deals magic damage and features a powerful weapon art that launches a wave of stars. Found in a hidden chest in Ainsel River, it’s great for Intelligence builds looking for something fast and flashy.

7. Scorpion’s Stinger (Lake of Rot Shoreside)

This nasty little dagger inflicts scarlet rot and scales well with Dexterity. Found in the Lake of Rot, it’s perfect for status effect builds. Combine it with rot-enhancing talismans for some truly painful combos.

8. Dragoncrest Greatshield Talisman (Hidden Path to the Haligtree)

Though technically hidden between an underground path and surface level, this talisman reduces physical damage taken by a significant amount. Essential for tanky builds or those tackling difficult bosses solo.

9. Bloodflame Blade (Learned from a Teardrop Scarab, near Mohgwyn Palace)

This incantation adds blood loss buildup to your melee weapons. If you're running an Arcane or bleed-focused build, this buff is indispensable. It's tucked away in one of the most dangerous underground zones, but worth the risk.

Digging Deeper Into the Underground

The underground zones in Elden Ring are more than just optional side content—they’re crucial to uncovering the world’s deeper secrets and collecting gear that can redefine your build. Places like Siofra River, Nokron, Ainsel River, and Mohgwyn Palace aren’t just visually stunning—they're brimming with danger and reward.

If you're short on upgrade materials or just want to skip the grind, some players look for ways to buy Elden Ring Items or farm cheap elden ring runes more efficiently. Sites like U4GM are often discussed in community forums for those who want to experiment freely without dozens of hours of farming.

Whether you’re diving in for lore, loot, or a powerful new build, don’t ignore what’s hidden below. The underground in Elden Ring holds some of the most satisfying discoveries in the game—if you’re brave enough to seek them out.