Blood-stained stepping stones.

My work is mainly about the garden of Eden which is closed and not exist anymore in human world. I've been wondering what if Garden of Eden still exists. what does it look like? Is it still a perfect place? So, I wanted to re-create it and named it-The Closed Garden. After enter The Closed Garden, you need to cross the stepping stones which is blood stained. We don't know where this blood came from but, with this someone's sacrifice, we can cross this water safety from a vicious-weird bird.