Snag LakeSnag Lake is a lake located in the northeastern part of Lassen Volcanic National Park in California, United States.DescriptionSnag Lake, a large body of water, is located to the south of Cinder Cone and the Fantastic Lava Beds at an elevation of. Water from the nearby Horseshoe Lake empties into Snag Lake via Grassy Creek. Water from Snag Lake continues to flow through the porous lava field that led to the lake's creation eventually making its way into Butte Lake.AccessSnag Lake is accessible by hiking trail only.