diff --git a/c_tools/mock/ramses_loader.cpp b/c_tools/mock/ramses_loader.cpp
new file mode 100644
index 0000000..00258a6
--- /dev/null
+++ b/c_tools/mock/ramses_loader.cpp
@@ -0,0 +1,79 @@
+#include <cassert>
+#include <string>
+#include <CosmoTool/loadRamses.hpp>
+#include <CosmoTool/fortran.hpp>
+#include "simulation_loader.hpp"
+
+using namespace std;
+using namespace CosmoTool;
+
+class RamsesLoader: public SimulationLoader
+{
+private:
+  int load_flags;
+  int _num_files;
+  int baseid;
+  bool double_precision;
+  SimuData *ramses_header;
+  string snapshot_name;
+public:
+  RamsesLoader(const string& basename, int baseid, bool dp, SimuData *header, int flags, int _num)
+    : snapshot_name(basename), load_flags(flags), _num_files(_num), double_precision(dp),
+      ramses_header(header)
+  {
+  }
+  
+  ~RamsesLoader()
+  {
+    delete ramses_header;
+  }
+  
+  SimuData *getHeader() {
+    return ramses_header;
+  }
+  
+  int num_files() {
+    return _num_files;
+  }
+  
+  SimuData *loadFile(int id) {
+    SimuData *d;
+    
+    if (id >= _num_files)
+      return 0;
+
+    d = loadRamsesSimu(snapshot_name.c_str(), baseid, id, double_precision, load_flags);
+    assert(d != 0);
+      
+    long *uniqueID = new long[d->NumPart];
+    for (long i = 0; i < d->NumPart; i++)
+      {
+        uniqueID[i] = d->Id[i];
+      }
+
+    d->new_attribute("uniqueID", uniqueID, delete_adaptor<long>);
+
+    applyTransformations(d);
+
+    return d;
+  }
+};
+
+SimulationLoader *ramsesLoader(const std::string& snapshot, int baseid, bool double_precision, int flags)
+{
+  SimuData *d, *header;
+  int num_files = 0;
+
+  header = loadRamsesSimu(snapshot.c_str(), baseid, 0, double_precision, 0);
+  if (header == 0)
+    return 0;
+
+  while ((d = loadRamsesSimu(snapshot.c_str(), baseid, num_files, double_precision, 0)) != 0)
+    {
+      num_files++;
+      delete d;
+    }
+
+  return new RamsesLoader(snapshot, baseid, double_precision, header, flags, num_files);
+}
+
diff --git a/c_tools/mock/simulation_loader.hpp b/c_tools/mock/simulation_loader.hpp
index e039cf6..e605fec 100644
--- a/c_tools/mock/simulation_loader.hpp
+++ b/c_tools/mock/simulation_loader.hpp
@@ -43,7 +43,7 @@ void delete_adaptor(void *ptr)
 SimulationLoader *gadgetLoader(const std::string& snapshot, double Mpc_unitLength, int flags);
 SimulationLoader *flashLoader(const std::string& snapshot, int flags);
 SimulationLoader *multidarkLoader(const std::string& snapshot, int flags);
-SimulationLoader *ramsesLoader(const std::string& snapshot, int flags);
+SimulationLoader *ramsesLoader(const std::string& snapshot, int baseid, bool double_precision, int flags);
 
 
 #endif