As of the date of this post, this ice spike is the highest naturally generated point that has ever been discovered in default world generation. It generated 51 blocks tall on top of Y=253 windswept terrain.
Seed: -4441830615553394566
Version: Java 1.18+
Location: /tp -18527236 300 -3479744
If you do not use the provided teleport command, the ice spike may fail to generate due to chunk loading order.
by estradying