The diagrams illustrate the process of building an igloo. Summarise the information by selecting and reporting the main features and making comparisons where relevant.

The diagram illustrates several steps of how the construction of an igloo is carried out.

It is clear that

there are 5 main stages in

this

process, beginning with getting hard-packed

snow

in the mountain and ending with covering the entrance hole. As can be seen, during the first stage, after the hard-packed

snow

is collected, it is sawed directly by hand to become an ideal

snow

block with an appropriate size to be put at the base of the construction. Before all the cubes are assembled upward to form a circle, a saw is utilized to smooth the edges.

Next,

a hole is dug under the wall to create an entrance. To finish the assemblage, a slightly large block is put at the top of the igloo. In the fourth step, loose

snow

is shovelled and packed into all crevices. The inside

then

is flattened by hand and extra

snow

is shoved out.

Finally

, a hole is dug in the shape of the desired entrance before being covered by

snow

blocks to make a roof.