06/09/2026
Here is a shot I took last week of Long Island and Speaker Heck Is., with the tip of Assembly Point and Pilot K**b (2,163') and Buck Mtn. (2,333').
But on such a clear day, with super calm water, you can really look down and see the shoals in the lake. Sometimes you can look down and see to about 20' deep.
Here you can see how far the shoal extends south of Speaker Heck!
I knew that just like Diamond Island, Big and Little Canoe Islands, and Dome Island there were shoals that extend both north and south of the islands, with the southern shoals always being longer and I DID know that there are similar shoals around Long Island, but I never knew it was this long!
The rock line extends far past the danger buoy!
Now why are there these shoals north and south of these islands in the southern basin is due to the glaciers.
About 1.6 Million Years Ago a huge sheet glacier covered the northern US (all the way to northern Missouri) and it finally retreated 12,000 - 10,000 years ago. During this time the glacier flowed and carved up the land.
So Dome Island is known as a classic Drumlin, which are elongated, teardrop-shaped hills of sediment formed beneath moving glaciers. As an active glacier flows over unconsolidated rock and soil, it streamlines the material into a teardrop shape with a steep, blunt end pointing upstream and a gentle slope trailing.
You can see similar characteristics with these islands.
Also Long Is., Big Canoe, and Dome Is. are oriented in a similar direction, wile Cleverdale, Rockhurst, and Assembly Points, and Diamond Island are oriented in a similar orientation.
I dont know for sure, but this could be from the direction that certain parts of the glaciers would flow over the land locally.
If anyone knows more then please chime in!
Long Island on Lake George
Near Cleverdale, NY.
June 3, 2026.