Air bubbles trapped in ice sheet. The bubbles become trapped on their way to the surface. Frozen lake with the icy circles trapped underneath in fascinating formations. Methane gas bubble underwater lakes. Bizarre floating sea cratures. Thick glassy ice sheets. Transparent layer. Cold winter season. Thickens and freezes around them, which can create the layered balloon effect seen in footage. Cracks frosted frost iced icebound icefield thin shards fractures crack subzero water cool glass plate climate iciness floe wintertide coldest supercooled bright clean freezing soft dam cristal crystalline fragile structure natural small flat art nature event face floor wonderful fantastic excellent amazing beautiful real beauty gorgeous spectacular little UHD 3840X2160 4K.