Minecraft wiki entry for Old_Growth_Taiga, associated text: There are overall more trees in old growth taigas compared to normal taigas, leading to increased foliage density. This makes wood more abundant, though as a large portion of it grows as part of tall 2×2 spruce trees, it may be more difficult to obtain. Old growth taigas are slightly more difficult for survival than regular taigas for this reason, though aren't so bad once acclimated and strategies are used to clear the tall trees; they may offer more unique views compared to regular taigas as well.