Tunnel

north=false,east=false,south=false,west=false,up=false,down=false north=false,east=false,south=false,west=false,up=false,down=true north=false,east=false,south=false,west=false,up=true,down=false north=false,east=false,south=false,west=false,up=true,down=true north=false,east=false,south=false,west=true,up=false,down=false north=false,east=false,south=false,west=true,up=false,down=true north=false,east=false,south=false,west=true,up=true,down=false north=false,east=false,south=false,west=true,up=true,down=true north=false,east=false,south=true,west=false,up=false,down=false north=false,east=false,south=true,west=false,up=true,down=true north=false,east=false,south=true,west=true,up=false,down=false north=false,east=true,south=false,west=false,up=false,down=false north=false,east=true,south=false,west=false,up=false,down=true north=false,east=true,south=false,west=false,up=true,down=false north=false,east=true,south=false,west=false,up=true,down=true north=false,east=true,south=false,west=true,up=false,down=false north=false,east=true,south=false,west=true,up=false,down=true north=false,east=true,south=true,west=false,up=false,down=false north=true,east=false,south=false,west=false,up=false,down=false north=true,east=false,south=false,west=false,up=true,down=false north=true,east=false,south=false,west=false,up=true,down=true north=true,east=false,south=false,west=true,up=false,down=false north=true,east=false,south=true,west=false,up=false,down=false north=true,east=false,south=true,west=false,up=false,down=true north=true,east=false,south=true,west=false,up=true,down=false north=true,east=true,south=false,west=false,up=false,down=false