diff --git a/src/ASM/ASMs3D.h b/src/ASM/ASMs3D.h
index bcbcab56..956d2600 100644
--- a/src/ASM/ASMs3D.h
+++ b/src/ASM/ASMs3D.h
@@ -93,6 +93,11 @@ public:
   virtual ~ASMs3D() {}
 
 
+  // Methods to access data
+  // ============================
+  Go::SplineVolume* getVolume() { return svol; }
+
+
   // Methods for model generation
   // ============================