I would like to merge two lists:

`lon: [14.21055347, 14.21055347, 16.39356558, 16.39356558, 14.21055347]`

`lat: [48.22824817, 48.22824817, 48.18617251, 48.18617251, 47.65823679]`

to get:

`coordinates: [[14.21055347, 48.22824817], [14.21055347, 48.22824817], [16.39356558, 48.18617251], [16.39356558, 48.18617251], [14.21055347, 47.65823679]]`

How is this done efficiently for very long lists of lon/lat?

Thanks for your help!