The diagrams below give information about two road tunnels in two Australian cities. Summarize the information by selecting and reporting the main features and make comparisons where relevant.

The given maps illustrate two different underground

tunnel

systems for cars in two Australian cities.

Overall

, there are a number of differences between the two

tunnel

systems, in terms of the

cost

, size, length, time of construction, and the surrounding environment. The

first

tunnel

cost

approximately half as much as the

second

tunnel

to construct,

however

, the

first

tunnel

was significantly smaller in terms of length and vehicle capacity. The

first

tunnel

also

took much longer to construct. The

first

tunnel

, which took twelve years to construct between 1986 and 1998,

cost

555 million dollars

,

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and was built underneath a body of water and sand. Meanwhile, the

second

tunnel

only took four years

for

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completion

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but

cost

twice as much, at 1,1 billion dollars, and was constructed beneath a layer of stone and clay. The size of the tunnels was

also

substantially different, with the

first

tunnel

being 1.5 meters high and 2.2 kilometres long, and the

second

tunnel

being 2.5 meters high and 3.6 k kilometres long. The

first

tunnel

system is four lanes wide,

while

the

second

tunnel

system is six lanes wide.