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