No photograph of this spot yet — the map page's layers show exactly where it is.
The cave entrance is a vertical, underwater shaft, located in the lake at (55.2, 65.9). The shaft is just large enough for a to fit through and there is space to park 3-4 drakes once through the tunnel. You won't be able to take the drake far into the cave system, but it's a convenient way to get there. There are a number of vertical cliff climbs in this cave that you will need to traverse to get to , which can be overcome with and/or (don't forget to get back out)