Longest Lines of Sight on Earth
<i>Mt. McKinley (6.194 m.)</i><p>What country uses '.' as the thousands separator but speaks English?  Or is this someone mixing their native language thousands separator with English?  Or is there some weird interaction between country and language that makes this the preferred, or at minimum an acceptable standard form?  I'm actually hoping it's one of the latter options, that would be something new to me.