Whatì

Fort Providence

Behchokö

Kakisa

Hay River

YellowknifeNdilo

Detah

")

G R E A T S L A V EL A K E

NorthArm

KakisaLake

MillsLake

WillowLake

M A C K E N Z I E R I V E R

Hornell Lake

H O R N P L A T E A U

R a b b i t s k i n R i v e r

H o r n

R i v

e r

W i l l o w l a k e R i v e r

H o r n R i v e r

Deep Bay

85L 85K 85J

85E 85F

85G

85D 85C

85B

Sulphur Bay

GypsumPoint

MarianLake

Beaver LakeMackenzie Hwy.

Yellow

knife H

wy.

May 11, 20120 10 205 km ¼

Karst of the Horn Plateau and Gypsum Shorelines towards Yellowknife

#0#0

XW

GF

g

!(

^̀

^̀

!( Funnel-type sinkhole!( Suffosion sinkhole

")

Karst features points:

Significance ranking of karst terrains:Established global - very significantEstablished global - SignificantSignificance not yet well establishedUnique landform

Karst features lines:

Groundwater Flow ConnectionKarstic Glacial Spillway

Sinking Stream

Karst features polygons:Closed depression draining underground

Sinkholes clusteredSinkholes scatteredSinkholes widely scattered; may be some misidentification

!

! !

! Lake or pond draining underground

Suffosion sinkholes

Felsenmeere surfacesDrape karst topography

Piping pseudokarstIntersecting solutional corridorsSolutional pavement

!

! !

! Closed depression sinking stream

Hydration ridge - karstic; no detail

!(

!(!(

!(

!(

Karst pinnacle ridge

River Sink CaveKarst Cave penetrable >= 10m

Large Tor on Karst RocksWaterfallsUnknown

Sinkhole Exceptional

SpringIcing Spring

Alvar

1 : 250,000 NTS mapsheet grid and number85C