for(u32 jj=0; jj<caves_count+bruises_count; jj++)
	{
		int avg_height = (int)
                          ((base_rock_level_2d(data->seed, v2s16(node_min.X, node_min.Z)) +
                                base_rock_level_2d(data->seed, v2s16(node_max.X, node_max.Z))) / 2);
        if ((node_max.Y + node_min.Y) / 2 > avg_height)
                        break;