avocado> db.geo.ensureGeoIndex("loc");
162534834

avocado> for (i = -90;  i <= 90;  i += 10) {
.......>   for (j = -180; j <= 180; j += 10) {
.......>     db.geo.save({ name : "Name/" + i + "/" + j,
.......>                   loc: [ i, j ] }); } }

avocado> db.geo.count();
703

avocado> db.geo.near(0,0).limit(2).toArray();
[ { _id : 131840:24773376, _rev : 24773376, name : Name/0/0, loc : [ 0, 0 ] }, 
  { _id : 131840:22348544, _rev : 22348544, name : Name/-10/0, loc : [ -10, 0 ] } ]