diff --git a/Yavsc/contrib/install_earth.sql b/Yavsc/contrib/install_earth.sql
new file mode 100644
index 00000000..0a5cb225
--- /dev/null
+++ b/Yavsc/contrib/install_earth.sql
@@ -0,0 +1,6 @@
+SELECT version();
+CREATE EXTENSION "cube"; -- you will not be able install "earthdistance" w/o "cube" extension
+CREATE EXTENSION "earthdistance"; --or any other extension you need
+create extension earthdistance;
+select earth();
+select earth_distance(ll_to_earth(12.4,2.0),ll_to_earth(12.456,2.8043)); -- 87km
\ No newline at end of file