description Lough Mask Overview
Lough Mask is a substantial limestone lake straddling the border between Counties Galway and Mayo in western Ireland. The lake is defined by its karst geology, featuring an underground drainage system where water flows beneath the porous limestone bedrock to supply the neighboring Lough Corrib. It is a popular destination for brown trout angling, attracting recreational fishers to its shores. The lake's complex subterranean waterways include notable caves and channels.
help Lough Mask FAQ
Where is Lough Mask?
Lough Mask is in western Ireland and straddles the boundary between County Galway and County Mayo. It is a substantial limestone lake associated with the karst landscape of the region.
What is unusual about Lough Mask's geology?
Lough Mask sits on porous limestone and has an underground drainage system. Water can move beneath the bedrock before supplying the neighboring Corrib system.
How is Lough Mask connected to Lough Corrib?
The limestone drainage beneath and around Lough Mask helps supply neighboring Lough Corrib. This connection is partly underground, which reflects the area's karst geology.
Is Lough Mask a volcanic lake?
No. Its defining geology is limestone karst, including porous bedrock and underground water movement. That makes Lough Mask different from a lake formed primarily in a volcanic crater.
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