Clues: [contextual images] Instructions: Name That Landmark
_ _ _ N _ _ _ _ _ _ _ _ _
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Sign up to join this communityThe landmark you are looking for is
MOUNT VESUVIUS!
The grid is actually
The planets of the solar system represented using chemical elements. The first is a bit of wordplay with using the element Mercury - Hg, while the rest are made up as follows, removing letters where necessary:
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And as you can see, following the arrows spells out 'VESUVIUS' - the name of the landmark we are after!
OP Edit - Additionally, the chemical number for Mercury is 80. the phrase "80-1=explosion" is meant to point to the year 79AD when Vesuvius erupted. Furthermore, during the time period of 79AD, the only known planets were Mercury, Venus, Earth, Mars, Jupiter, and Saturn.