mapping.json

{
  "geos" : {
    "mappings" : {
      "point" : {
        "properties" : {
          "location" : {
            "type" : "geo_point"
          }
        }
      }
    }
  }
}

out.json

{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 2,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "geos",
      "_type" : "point",
      "_id" : "two",
      "_score" : 1.0, "_source" : {"location":"61,31"}
    }, {
      "_index" : "geos",
      "_type" : "point",
      "_id" : "one",
      "_score" : 1.0, "_source" : {"location":[60,30]}
    } ]
  }
}