# Mountain Encounters (Levels 17—20) *Source: Xanathar's Guide to Everything p. 104* **Mountain Encounters (Levels 17—20)** `dice: [](mountain-encounters-levels-1720-xge.md#^mountain-encounters-levels-1720)` | dice: d100 | Encounter | |------------|-----------| | 01-05 | `dice:1d10\|noform\|noparens\|avg` (`1d10`) [bulettes](/Rules/Source/bestiary/monstrosity/bulette-xmm.md) | | 06-10 | `dice:1d8+1\|noform\|noparens\|avg` (`1d8 + 1`) [chimeras](/Rules/Source/bestiary/monstrosity/chimera-xmm.md) | | 11-15 | 1 [adult silver dragon](/Rules/Source/bestiary/dragon/adult-silver-dragon-xmm.md) | | 16-20 | `dice:1d8+1\|noform\|noparens\|avg` (`1d8 + 1`) [wyverns](/Rules/Source/bestiary/dragon/wyvern-xmm.md) | | 21-25 | A massive boat perched atop a mountain | | 26-30 | `dice:2d4\|noform\|noparens\|avg` (`2d4`) [galeb duhr](/Rules/Source/bestiary/elemental/galeb-duhr-xmm.md) | | 31-35 | `dice:1d4\|noform\|noparens\|avg` (`1d4`) [frost giants](/Rules/Source/bestiary/giant/frost-giant-xmm.md) | | 36-40 | A wooded valley haunted by secretive and reclusive elves who tell warily of their master: a mad wizard who lives in the heart of the valley | | 41-45 | `dice:1d10\|noform\|noparens\|avg` (`1d10`) [air elementals](/Rules/Source/bestiary/elemental/air-elemental-xmm.md) | | 46-50 | `dice:1d6+3\|noform\|noparens\|avg` (`1d6 + 3`) [trolls](/Rules/Source/bestiary/giant/troll-xmm.md) | | 51-55 | 1 [adult red dragon](/Rules/Source/bestiary/dragon/adult-red-dragon-xmm.md) | | 56-60 | `dice:1d4\|noform\|noparens\|avg` (`1d4`) [cloud giants](/Rules/Source/bestiary/giant/cloud-giant-xmm.md) | | 61-65 | A waterfall hundreds of feet high that drops into a clear pool | | 66-70 | `dice:1d3\|noform\|noparens\|avg` (`1d3`) [fire giants](/Rules/Source/bestiary/giant/fire-giant-xmm.md) | | 71-75 | `dice:2d4\|noform\|noparens\|avg` (`2d4`) [stone giants](/Rules/Source/bestiary/giant/stone-giant-xmm.md) | | 76-80 | A force of 100 dwarves ([veterans](/Rules/Source/bestiary/humanoid/warrior-veteran-xmm.md)) standing guard at a mountain pass, permitting no passage until a traveler pays 100 gp (if on foot) or 200 gp (if mounted) | | 81-85 | `dice:1d4\|noform\|noparens\|avg` (`1d4`) [rocs](/Rules/Source/bestiary/monstrosity/roc-xmm.md) | | 86-90 | `dice:1d4\|noform\|noparens\|avg` (`1d4`) [young red dragons](/Rules/Source/bestiary/dragon/young-red-dragon-xmm.md) | | 91-96 | 1 [ancient silver dragon](/Rules/Source/bestiary/dragon/ancient-silver-dragon-xmm.md) | | 97-00 | 1 [ancient red dragon](/Rules/Source/bestiary/dragon/ancient-red-dragon-xmm.md) | ^mountain-encounters-levels-1720