Location	Marker		Exits
				N	S	E	W	U	D
-------------------------------------------------------------------------------
Cavern				N/A	N/A	N/A	N/A	N/A	SIGN
SIGN		sign		WU	NEWU	NEWU	--	--	WU
NEWU				SIGN	--	WU	SIGN	WU	--
WU				--	--	--	SCRATCH	SIGN	--
SCRATCH		scratchings	ARROW	SIGN	WU	SUD	SUD	ARROW
SUD				--	ARROW	--	--	SCRATCH	ARROW
ARROW		arrow, *rug*	ARROW	SIGN	SIGN	NEWU	SCRATCH	LAVA
LAVA		lava, *net*	--	--	--	--	ARROW	--

From cavern to lava:
d
d
w
d
get rug
d
get net

From lava, just SAY AWAY twice while carrying the rug.