diff --git a/opm/core/utility/cart_grid.c b/opm/core/utility/cart_grid.c
index 82ed3d98..f59f523b 100644
--- a/opm/core/utility/cart_grid.c
+++ b/opm/core/utility/cart_grid.c
@@ -437,227 +437,6 @@ fill_cart_geometry_3d(struct UnstructuredGrid *G, int nx, int ny, int nz)
 
 /* --------------------------------------------------------------------- */
 
-struct UnstructuredGrid*
-create_cart_grid(int nx, int ny, int nz)
-{
-    int    i,j,k;
-    int    nxf, nyf, nzf;
-    int    Nx, Ny, Nz;
-
-    struct UnstructuredGrid *G;
-    double *coord, *ccentroids, *cvolumes;
-    double *fnormals, *fcentroids, *fareas;
-
-    int    *fnodes, *fnodepos, *fcells, *cfaces, *cfacepos;
-
-    G = malloc(1 * sizeof *G);
-    if (G == NULL)
-    {
-        fprintf(stderr, "Cannot allocate space for grid.\n");
-        exit(EXIT_FAILURE);
-    }
-
-    G->dimensions = 3;
-
-    Nx  = nx+1;
-    Ny  = ny+1;
-    Nz  = nz+1;
-
-    nxf = Nx*ny*nz;
-    nyf = nx*Ny*nz;
-    nzf = nx*ny*Nz;
-
-    G->number_of_cells  = nx*ny*nz;
-    G->number_of_faces  = nxf+nyf+nzf;
-    G->number_of_nodes  = Nx*Ny*Nz;
-
-    G->node_coordinates = malloc(G->number_of_nodes * 3 * sizeof *(G->node_coordinates));
-
-    G->face_nodes       = malloc(G->number_of_faces * 4 * sizeof *(G->face_nodes));
-    G->face_nodepos     = malloc((G->number_of_faces+1) * sizeof *(G->face_nodepos));
-    G->face_cells       = malloc(G->number_of_faces * 2 * sizeof *(G->face_cells));
-    G->face_centroids   = malloc(G->number_of_faces * 3 * sizeof *(G->face_centroids));
-    G->face_normals     = malloc(G->number_of_faces * 3 * sizeof *(G->face_normals));
-    G->face_areas       = malloc(G->number_of_faces * 1 * sizeof *(G->face_areas));
-
-    G->cell_faces       = malloc(G->number_of_cells * 6 * sizeof *(G->cell_faces));
-    G->cell_facepos     = malloc((G->number_of_cells+1) * sizeof *(G->cell_facepos));
-    G->cell_centroids   = malloc(G->number_of_cells * 3 * sizeof *(G->cell_centroids));
-    G->cell_volumes     = malloc(G->number_of_cells * 1 * sizeof *(G->cell_volumes));
-
-    if ((G->face_nodes       == NULL ) ||
-        (G->face_nodepos     == NULL ) ||
-        (G->face_cells       == NULL ) ||
-        (G->face_centroids   == NULL ) ||
-        (G->face_normals     == NULL ) ||
-        (G->face_areas       == NULL ) ||
-        (G->cell_faces       == NULL ) ||
-        (G->cell_facepos     == NULL ) ||
-        (G->cell_centroids   == NULL ) ||
-        (G->cell_volumes     == NULL )  )
-    {
-        fprintf(stderr, "Cannot allocate space for grid.\n");
-        exit(EXIT_FAILURE);
-    }
-
-    cfaces     = G->cell_faces;
-    cfacepos   = G->cell_facepos;
-    ccentroids = G->cell_centroids;
-    cvolumes   = G->cell_volumes;
-    cfacepos[0] = 0;
-    for (k=0; k<nz; ++k)  {
-        for (j=0; j<ny; ++j) {
-            for (i=0; i<nx; ++i) {
-                *cfaces++ = i+  Nx*(j+  ny* k   );
-                *cfaces++ = i+1+Nx*(j+  ny* k   );
-                *cfaces++ = i+  nx*(j+  Ny* k   )  +nxf;
-                *cfaces++ = i+  nx*(j+1+Ny* k   )  +nxf;
-                *cfaces++ = i+  nx*(j+  ny* k   )  +nxf+nyf;
-                *cfaces++ = i+  nx*(j+  ny*(k+1))  +nxf+nyf;
-
-                cfacepos[1] = cfacepos[0]+6;
-                ++cfacepos;
-
-                *ccentroids++ = i+0.5;
-                *ccentroids++ = j+0.5;
-                *ccentroids++ = k+0.5;
-
-                *cvolumes++ = 1;
-            }
-        }
-    }
-
-
-    fnodes     = G->face_nodes;
-    fnodepos   = G->face_nodepos;
-    fcells     = G->face_cells;
-    fnormals   = G->face_normals;
-    fcentroids = G->face_centroids;
-    fareas     = G->face_areas;
-    fnodepos[0] = 0;
-
-    /* Faces with x-normal */
-    for (k=0; k<nz; ++k) {
-        for (j=0; j<ny; ++j) {
-            for (i=0; i<nx+1; ++i) {
-                *fnodes++ = i+Nx*(j   + Ny * k   );
-                *fnodes++ = i+Nx*(j+1 + Ny * k   );
-                *fnodes++ = i+Nx*(j+1 + Ny *(k+1));
-                *fnodes++ = i+Nx*(j   + Ny *(k+1));
-                fnodepos[1] = fnodepos[0] + 4;
-                ++fnodepos;
-                if (i==0) {
-                    *fcells++ = -1;
-                    *fcells++ =  i+nx*(j+ny*k);
-                }
-                else if (i == nx) {
-                    *fcells++ =  i-1+nx*(j+ny*k);
-                    *fcells++ = -1;
-                }
-                else {
-                    *fcells++ =  i-1 + nx*(j+ny*k);
-                    *fcells++ =  i   + nx*(j+ny*k);
-                }
-
-                *fnormals++ = 1;
-                *fnormals++ = 0;
-                *fnormals++ = 0;
-
-                *fcentroids++ = i;
-                *fcentroids++ = j+0.5;
-                *fcentroids++ = k+0.5;
-
-                *fareas++ = 1;
-            }
-        }
-    }
-    /* Faces with y-normal */
-    for (k=0; k<nz; ++k) {
-        for (j=0; j<ny+1; ++j) {
-            for (i=0; i<nx; ++i) {
-                *fnodes++ = i+    Nx*(j + Ny * k   );
-                *fnodes++ = i   + Nx*(j + Ny *(k+1));
-                *fnodes++ = i+1 + Nx*(j + Ny *(k+1));
-                *fnodes++ = i+1 + Nx*(j + Ny * k   );
-                fnodepos[1] = fnodepos[0] + 4;
-                ++fnodepos;
-                if (j==0) {
-                    *fcells++ = -1;
-                    *fcells++ =  i+nx*(j+ny*k);
-                }
-                else if (j == ny) {
-                    *fcells++ =  i+nx*(j-1+ny*k);
-                    *fcells++ = -1;
-                }
-                else {
-                    *fcells++ =  i+nx*(j-1+ny*k);
-                    *fcells++ =  i+nx*(j+ny*k);
-                }
-
-                *fnormals++ = 0;
-                *fnormals++ = 1;
-                *fnormals++ = 0;
-
-                *fcentroids++ = i+0.5;
-                *fcentroids++ = j;
-                *fcentroids++ = k+0.5;
-
-                *fareas++ = 1;
-            }
-        }
-    }
-    /* Faces with z-normal */
-    for (k=0; k<nz+1; ++k) {
-        for (j=0; j<ny; ++j) {
-            for (i=0; i<nx; ++i) {
-                *fnodes++ = i+    Nx*(j   + Ny * k);
-                *fnodes++ = i+1 + Nx*(j   + Ny * k);
-                *fnodes++ = i+1 + Nx*(j+1 + Ny * k);
-                *fnodes++ = i+    Nx*(j+1 + Ny * k);
-                fnodepos[1] = fnodepos[0] + 4;
-                ++fnodepos;
-                if (k==0) {
-                    *fcells++ = -1;
-                    *fcells++ =  i+nx*(j+ny*k);
-                }
-                else if (k == nz) {
-                    *fcells++ =  i+nx*(j+ny*(k-1));
-                    *fcells++ = -1;
-                }
-                else {
-                    *fcells++ =  i+nx*(j+ny*(k-1));
-                    *fcells++ =  i+nx*(j+ny*k);
-                }
-
-                *fnormals++ = 0;
-                *fnormals++ = 0;
-                *fnormals++ = 1;
-
-                *fcentroids++ = i+0.5;
-                *fcentroids++ = j+0.5;
-                *fcentroids++ = k;
-
-                *fareas++ = 1;
-            }
-        }
-    }
-
-    coord = G->node_coordinates;
-    for (k=0; k<nz+1; ++k) {
-        for (j=0; j<ny+1; ++j) {
-            for (i=0; i<nx+1; ++i) {
-                *coord++ = i;
-                *coord++ = j;
-                *coord++ = k;
-            }
-        }
-    }
-
-    return G;
-}
-
-/* --------------------------------------------------------------------- */
-
 static struct UnstructuredGrid*
 allocate_cart_grid_2d(int nx, int ny)
 {
diff --git a/opm/core/utility/cart_grid.h b/opm/core/utility/cart_grid.h
index b4a9c04a..c591e60b 100644
--- a/opm/core/utility/cart_grid.h
+++ b/opm/core/utility/cart_grid.h
@@ -36,10 +36,6 @@ extern "C" {
 
 struct UnstructuredGrid;
 
-/* void                     destroy_cart_grid(struct UnstructuredGrid *G); */
-
-struct UnstructuredGrid *create_cart_grid(int nx, int ny, int nz);
-
 struct UnstructuredGrid *create_cart_grid_2d(int nx, int ny);
 struct UnstructuredGrid *create_cart_grid_3d(int nx, int ny, int nz);