Problem with stalagmite generation in the world.

While I was playing in a survival world I had noticed a two stalagmites in a river/lake on a few drip dripstone blocks at y-level 57. I dug at a nearby beach and mined down then towards it and there seems to be no nearby cave. Before reporting I had checked for any similar issues with the generation of the new blocks with no reports seen and checked where they are supposed to spawn before reporting. Sorry about the bad picture quality but to make up for it a added a light source next to the stalagmites for a better visual. Thanks for your hard work on making Minecraft a great game and adding fun features to it.