Deep Caves in the State of Montana

Rank Cave Name Depth (ft) Length (ft) County
1 Virgil the Turtle's Greathouse Cave 1586 5394 Flathead
2 Silvertip Cave System 1089 30702 Flathead
3 Sunray-Sunset Cave System 801 4928 Flathead
4 Lost Creek Siphon 650 997 Park
5 Flathead Alps Cave 642 1114 Powell
6 Meanderbelt Cave 633 3959 Flathead
7 Lewis and Clark Cavern 580 10063 Jefferson
8 Moonray Cave 563 2590 Flathead
9 Greenhouse Cave 562 1521 Flathead
10 Ram's Horn Cave 493 4750 Meagher
11 Tears of the Turtle Cave 435 1246 Flathead
12 French Creek Cave 434 9669 Beaverhead
13 Reaper's Rock Pile 419 749 Teton
14 The Cave That Summer Forgot 412 1763 Flathead
15 Lillyguard Cave 410 2100 Judith Basin
16 Cop Out Cave 408 874 Flathead
 

Other Significant Deep Caves in the State of Montana

Rank Cave Name Depth (ft) Length (ft) County
15 Hole in the Wall Cave 384 2266 Flathead
16 Poia Lake Cave 365 5480 Glacier
17 Whitaker Sink 345 1200 Judith Basin
18 Blood Cave 333 14328 Flathead
19 Tate-Poetter Cave 327 1975 Fergus
20 Algal Cave 305 2060 Flathead
21 Mill Creek Crystal Cave 300 4000 Park
22 Lone Goat Pit 287 381 Flathead
23 Flakey Cave 279 4503 Flathead
24 Ibex Mountain Cave 268 341 Flathead
25 Frogg's Fault Cave 261 400 Carbon
26 Clone Cave 254 1217 Flathead
27 Sardine Cave 250 747 Flathead
28 Lick Creek Cave 240 4000 Cascade
29 Spinshaft Cave 230 250 Flathead
30 Volcano Reef Cave 230 450 Teton
31 Garrity Cave 227 602 Deer Lodge
32 Soft Core Crevasse 222 448 Lewis and Clark
33 Azure Cave 220 1580 Philips
34 Peterson Meadow Cave 212 356 Granite
34 Twin Sister Cave - West Shaft 212 230 Judith Basin
35 Bird Cave 205 922 Flathead

 

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