Hi. I want to remove what I believe are two tree stumps[imgur.com]. I have a knife, an axe and a pickaxe in my inventory, but I see no option to remove stump/bush/grass/cut down tree, etc. I tried digging a furrow and see if the tile would become normal dirt, but the object remains there. What can I use to remove it?

Also, there is a big boulder[imgur.com] in the area where I am currently building and I want it gone. I tried using the pickaxe, but it doesn't show any option to do so. I tried hitting it, butit doesn't appear to have a hitbox.

I saw in the forums someone suggested using the sledgehammer to destroy both, but when I click destroy, none of the tiles appear highlighted in red as destructible tiles tend to.

If I have to, I'll use the debug mode to get rid of them, but I'd like to know if there is a way to remove then in normal gameplay