Instead burrows big map should show cave entrances/passages

[XBBW]

Who agrees with me, the ctrl + a the big Map, should be showing cave entrances/passages instead of burrows or heck both, but why does it only show burrows and why is it that it shows burrows, can't remember the devs reasoning. But yea cave entrances/passages should be shown on big map and where they are as to my knowledge they can't be removed or destroyed, unlike the steep hill hedges which can be smoothed out.