How do you define altitude for a geo_point? (3D location)

Elastic Stack Elasticsearch
1

I would like my document to have a location something like -
"location": {
"lat": 38.99,
"lon": -200.09,
"altitude": 45.90
}

How can elasticsearch detect the third field? Does it support it?

2

It doesn't no.
You can put it as it's own field though.