This is a reserve for items that must be hidden in the ground.
For my part I put "Magical Waterfall" to make a nice entrance and hidden.
I give free room to put the frame on the chest.
Link: Magical Waterfall: http://www.minecraft-schematics.com/schematic/2287/ (Soon update for a version light design)
Give me your opinion.
Minecraft 1.7.4 texture pack chroma hills 64X