An excerpt from A Study in Scarlet:
A short passage, bare planked and dusty, led to the kitchen and offices. Two doors opened out of it to the left and to the right.
Could anyone please explain to me what does the second sentence mean? First I thought, the main verb is "open out", which means of a road or a pathway to widen at the end. But that doesn't seem right; it just doesn't fit together. Then, I understood that "out of it" is a preposition and "open to something" is the main verb. But I still can't understand it exactly. And what is the picture that you have in your mind when you read this sentence?