Cracking ice block + block set in ice caves

The cracking ice can create a new and different sense of danger in this unique biome Adding new blocks is a great idea. For this time the generation of ice caves could include small clusters or stripes on the ground made by cracking ice, a new ice that break if you jump on it or stay on it for too long. The block should have 2 stages, for example if i jump the first time the block cracks and for the second time the block texture becomes very damaged, if you jump for the third time the block breaks instantly. This new block could generate inside ice caves or crafted with 4 icicles in a crafting table (new automatic farms). The block can be combined to make ice bricks and its derivates.