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

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systems for cars in two Australian cities.

Overall

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, there are a number of differences between the two

tunnel

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systems, in terms of the

cost

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

first

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tunnel

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cost

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approximately half as much as the

second

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tunnel

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to construct,

however

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, the

first

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tunnel

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

first

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tunnel

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also

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took much longer to construct. The

first

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tunnel

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

cost

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555 million dollars

,

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

second

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tunnel

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only took four years

for

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to

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completion

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complete

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but

cost

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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

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substantially different, with the

first

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tunnel

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being 1.5 meters high and 2.2 kilometres long, and the

second

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tunnel

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being 2.5 meters high and 3.6 k kilometres long. The

first

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tunnel

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system is four lanes wide,

while

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the

second

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tunnel

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system is six lanes wide.