What is this?
cave
nest
skeleton
eggshell ( shell )
What is this?
bridge
ladder
arch
stairs
What is this?
stairs
ladder
castle
basket
What is this?
tree branch
tree root
tree trunk
tree house
What is this?
cave
pillar
bridge
arch
What is this?
nest
arch
tent
basket
What is this?
castle
arch
house
bridge
What is this?
nest
tree house
tree trunk
basket
What is this?
pillar (column)
bridge
castle
arch
What is this?
basket
book
box
bag
What is this?
nest
cave
eggshell
shell
What is this?
arch
ladder
stairs
bridge
What is this?
ladder
shell
tree trunk
skeleton
What is this?
castle
arch
bridge
ladder
What is this?
stairs
castle
arch
pillar (column)
What is this?
pillar (column)
arch
cave
tent
What is this?
tree trunk
nest
arch
beaver dam
What is this?
bag
book
basket
box
What are these?
bridge
ladder
stairs
pillar
What is this?
nest
cave
beaver dam
arch