A question about "cupboard"
Hey guys, I faced a question yesterday when I was doing my assighments .
The original sentence is :" I'll tell you where you can get the pillow. If you look in to the cupboard, the large white one upstairs - to the left of the bathroom door -there should be four five."
And question on book is " the location of the pillows''. The answer given is " in cupboard on landing"
I'm wondering about what does "on landing" mean. Because it's said that "cupboard is the larger on upstairs", why the answer given says that it's on land?