diff --git a/contexte.inc b/contexte.inc
index 25ed8b3..c503768 100644
--- a/contexte.inc
+++ b/contexte.inc
@@ -62,8 +62,6 @@ blob			{
 
 // =======================================================
 
-#declare SzSol = 26;
-
 #declare Le_Sol = object
 {
 height_field {
diff --git a/globals.inc b/globals.inc
index 681a70d..76ac1ab 100644
--- a/globals.inc
+++ b/globals.inc
@@ -1,7 +1,7 @@
 
 global_settings	{
 	assumed_gamma  1.0
-	ambient_light rgb <0.23, 0.23, 0.21>
+	ambient_light rgb <0.18, 0.18, 0.21>
 	max_trace_level 15
 	}
 
@@ -22,9 +22,14 @@ global_settings	{
  *	Some constants...
  */
 
+#declare SzSol      = 30;
+
 #declare R_basecone = 0.117;
 #declare H_cone     = 0.97;
 
+#declare R_gyro     = 0.10;
+#declare H_gyro     = 1.20;
+
 /* ------------------------------------------------------------ */
 /*
  *	Usefull macros