Region · The Underside

The Underside — Silksong Region Guide

Act 3

The deepest layer of Act 3's descent, where the final confrontation with Lost Lace ends Hornet's climb.

Getting around: Endgame routing — every traversal ability is in play.

Interactive map

Explore The Underside on the full Pharloom map

2 benches · 1 boss arenas · region-filtered markers

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The Underside at a glance

2

Benches

1

Bosses

1

Mask shards

1

Lost fleas

0

Spool fragments

Bosses in The Underside

Collectibles in The Underside

Mask shards

1
  • Mask Shard 20Final-stretch cache on the deepest layer.
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Lost fleas

1
  • Lost Flea 29
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Quests in The Underside

The True Ending

Unlocking Act 3 by collecting the three Melodies and completing the later regions leads to the true ending; some side quests influence variations on the final sequence.

Main

Full Silksong quests guide →

More regions in Act 3

Want the long-form version?

The Underside is covered in depth in our full Pharloom world and regions guide — the hub article this page links back to.

Read the world regions guide →