You can find the script here: https://gitworkshop.dev/r/naddr1qqxxjmnnw3skymr0wdek7mgpp4mhxue69uhkummn9ekx7mqzyzrgt6l0vefn3htfx83veheur8vlpedpqe7frrezuuypcf2clra0sqcyqqq80xg9sng4n
Discussion
nostr:npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z IIRC Amethyst supports geotags, but I don't see anything in the app for the above picture. It has both g and l tags. But maybe I borked it.
My script uses nostr:npub1uac67zc9er54ln0kl6e4qp2y6ta3enfcg7ywnayshvlw9r5w6ehsqq99rx's nostr-geotags: https://github.com/sandwichfarm/nostr-geotags
London is London.

Oh it works!? Which app is that?
Amethyst. Just open the pic post itself. The geotag is there.
git clone http://git.sprovoost.nl/instablossom.git
https of course...