Stacked rocks

I didn't get any good photos, but here is proof that I at least stacked a few rocks. The one on the bottom is maybe a foot tall (2.5 beer cans tall) and once it's balanced, the rest is a heady mix of bravado and ease. I am seeking rocks in my home city for this purpose, and of course I have frozen ice blobs on the balcony awaiting a trip to the lake (the lake ice is not yet suitably thick).

Done