Missing coordinates. I've taken the ones from wowhead (https://www.wowhead.com/object=353792/village-strongbox) and posted them here. I've also stripped them down to just coordinates in the second list :

/way #1525 56.9 69.7 Village Strongbox
/way #1525 58.2 71.2 Village Strongbox
/way #1525 58.3 67.8 Village Strongbox
/way #1525 59.5 70.3 Village Strongbox
/way #1525 59.8 78.7 Village Strongbox
/way #1525 60.2 79.6 Village Strongbox
/way #1525 61.3 75.8 Village Strongbox
/way #1525 61.9 75.1 Village Strongbox
/way #1525 62.0 79.7 Village Strongbox
/way #1525 75.6 68.8 Village Strongbox
/way #1525 76.6 68.3 Village Strongbox
/way #1525 76.8 64.7 Village Strongbox
/way #1525 77.0 69.1 Village Strongbox
/way #1525 77.5 67.9 Village Strongbox
/way #1525 77.8 71.0 Village Strongbox
/way #1525 78.1 66.4 Village Strongbox
/way #1525 78.1 66.5 Village Strongbox

56.9 69.7
58.2 71.2
58.3 67.8
59.5 70.3
59.8 78.7
60.2 79.6
61.3 75.8
61.9 75.1
62.0 79.7
75.6 68.8
76.6 68.3
76.8 64.7
77.0 69.1
77.5 67.9
77.8 71.0
78.1 66.4
78.1 66.5

And it also sourse for https://www.wowhead.com/item=180394/envy-laced-leggings?bonus=6935
(leggings from secret treasure that is never up)