This slide looks so out of place in this setting. These look like an old foundation or something. Cool subject, but it doesn't feel like a landscape to me.
What an interesting shot. I am making up all kinds of stories in my mind to suit it. You did a good job making the 'slide' stand out. I wonder if there were more pure blacks or higher contrast if it would pop even more?
a good black and white photo has in it true black and true white and grey tones.. This feels like a lot of grey tones. The possition of the slide on the right, sliding back into the image is good, had it been facing the other way it would has slid the veiwer right out of the picture.