arango> db.geo2.drop();
true

arango> db.geo2.ensureGeoIndex("location.latitude", "location.longitude");
23735273

arango> for (i = -90;  i <= 90;  i += 10) 
.......>   for (j = -180; j <= 180; j += 10)
.......>     db.geo2.save({ name : "Name" + i + "-" + j,
.......>                    location: { latitude : i,
.......>                                longitude : j } });

arango> db.geo2.near(0,0);
{ "location" : { "latitude" : 0, "longitude" : 0 },
  "name" : "Name0-0", 
  "_id" : "geo2/73466820" }
{ "location" : { "latitude" : 0, "longitude" : -10 },
  "name" : "Name0--10",
  "_id" : "geo2/73401284" }
.
.
{ "location" : { "latitude" : 20, "longitude" : -10 },
  "name" : "Name20--10",
  "_id" : "geo2/75891652" }
{ "location" : { "latitude" : 10, "longitude" : 20 },
  "name" : "Name10-20",
  "_id" : "geo2/74843076" }
...more results...