Chasm Lake.

Chasm Lake sits in the Keene valley cluster — a 28-acre water with no public fish stocking records and limited angler attention, which typically means either difficult access or shallow warmwater habitat that doesn't hold trout through summer. The name suggests steep terrain or a narrow valley configuration, common in this part of the eastern High Peaks corridor where glacial melt carved pockets between ridgelines. Without maintained trail access or nearby lean-tos in the DEC inventory, this one skews toward private-land context or bushwhack-only approach — worth confirming land status and access legality before planning a visit.