,,*APT] #AF
           ,! ,EA/]N ,TUNNEL

  ,,! NEXT "D 0 ,TUES"D1 ! #CJ? ( ,JUNE-
& AT SIX O'C 9 ! MORN+ WE RESUM$ \R
J\RNEY4
  ,WE / 3T9U$ 6FOLL[ ! GALL]Y ( LAVA1 A
P]FECT NATURAL PA?WAY1 Z EASY ( DESC5T Z
"S ( ^? 9CL9$ PLANES :1 9 V OLD ,G]MAN
H\SES1 S]VE ! PURPOSE ( /AIRCASES4 ,?
W5T ON UNTIL SEV5TE5 M9UTES PA/ TWELVE1
! PRECISE 9/ANT AT : WE REJO9$ ,HANS1
:O1 HAV+ BE5 "S:AT 9 ADV.E1 _H SU45LY
/OPP$4
  8,AT LA/10 CRI$ MY UNCLE1 8WE H R1*$ !
5D (! %AFT40
  ,I LOOK$ WOND]+LY AB ME4 ,WE 7 9 !
C5T] ( F\R CROSS PA?S- SOMB] & N>R[
TUNNELS4 ,! "Q N[ >OSE Z 6: X 0 WISE
6TAKE2 & ? ( XF 0 NO SMALL DI6ICULTY4
  ,MY UNCLE1 :O DID N WI% 6APPE> 6H ANYHESIT,N AB ! MATT] 2F MYF OR !      #ADI
GUIDE1 AT ONCE MADE UP 8 M9D4 ,HE PO9T$
QUIETLY 6! EA/]N TUNNEL2 &1 )\T DELAY1
WE 5T]$ )9 XS GLOOMY RECESSES4
  ,2SS1 _H HE 5T]TA9$ ANY FEEL+ (
HESIT,N X MI<T H BE5 PROL;G$ 9DEF9ITELY1
= "! 0 NO 9DIC,N 0: 6DET]M9E ON A *OICE4
,X 0 ABSOLUTELY NEC 6TRU/ 6*.E & GD
=TUNE6
  ,! DESC5T ( ? OBSCURE & N>R[ GALL]Y 0
V GRADUAL & W9D+4 ,"S"TS WE GAZ$ "? A
SU3ES.N ( >*ES1 XS C\RSE V L ! AISLES (A
,GO?IC CA!DRAL4 ,! GRT >TI/IC SCULPTORS
& BUILD]S (! ,MI4LE ,AGES MI<T H "H
-PLET$ _! /UDIES ) ADVANTAGE4 ,_M MO/
B1UTI;L & SU7E/IVE ID1S ( >*ITECTURAL
B1UTY WD H BE5 4COV]$ 0!M4 ,AF PASS+ "?
? PHASE (! CAV]N\S WAY1 WE SU45LY CAME1
AB A MILE F>!R ON1 ^U A SQU>E SY/EM (
>*1 ADOPT$ 0! E>LY ,ROMANS1 PROJECT+ F !
SOLID ROCK1 & KEEP+ UP ! WEI<T (! RO(4
  ,SU45LY WE WD -E ^U A S]IES ( L[
SUBT]RAN1N TUNNELS : LOOK$ L B1V] HOLES1
OR ! "W ( FOXES- "? ^: N>R[ & W9D+ WAYS
WE _H LIT],Y 6CRAWL6  ,! H1T / REMA9$ AT Q A            #AEJ
SUPPORTA# DEGREE4 ,) AN 9VOLUNT>Y %U4]1
,I REFLECT$ ON :AT ! H1T M/ H BE5 :5 !
VOLCANO ( ,SNE6ELS 0 P\R+ XS SMOKE1
FLAMES1 & /R1MS ( BOIL+ LAVA- ALL ( : M/
H -E UP 0! ROAD WE 7 N[ FOLL[+4 ,I CD
IMAG9E ! TORR5TS ( HOT SEE?+ /"O D>T+
ON1 BU2L+ UP ) A3OMPANI;TS ( SMOKE1 /1M1
& SULPHUR\S /5*6
  8,ONLY 6?9K (! 3SEQU;ES10 ,I MUS$1 8IF
! OLD VOLCANO 7 ONCE M 6SET 6"W40
  ,I DID N -MUNICATE ^! R UNPL1SANT
REFLEC;NS 6MY UNCLE4 ,HE N ONLY WD N H
"U/OOD !M1 B WD H BE5 9T5SELY 4GU/$4 ,8
ONLY IDEA 0 6G AH1D4 ,HE WALK$1 HE SLID1
HE CLAMB]$ OV] PILES ( FRAG;TS1 HE ROLL$
D[N H1PS ( BROK5 LAVA1 ) AN E>NE/;S &
3VIC;N X 0 IMPOSSI# N 6ADMIRE4
  ,AT SIX O'C 9 ! EV5+1 AF A V WE>I"S
J\RNEY1 B "O N S FATIGU+ Z 2F1 WE _H
MADE SIX MILES T[>DS ! S\?W>D1 B _H N
G"O M ?AN A MILE D[NW>DS4
  ,MY UNCLE1 Z USUAL1 GAVE ! SIGNAL
6HALT4 ,WE ATE \R M1L 9 ?"\;L SIL;E1 &
!N RETIR$ 6SLEEP4  ,\R >RANGE;TS =! NI<T 7 V         #AEA
PRIMITIVE & SIMPLE4 ,A TRAVEL+ RUG1 9 :
EA* ROLL$ HMF1 0 ALL \R B$D+4 ,WE _H NO
NECESS;Y 6FE> COLD OR ANY UNPL1SANT
VISIT4 ,TRAVEL]S :O BURY !MVS 9 ! WILDS
& DEP?S (! ,AFRICAN DES]T1 :O SEEK PR(IT
& PL1SURE 9 ! =E/S (! ,NEW ,_W1 >E
-PELL$ 6TAKE X 9 TURN 6WAT* DUR+ ! H\RS
( SLEEP2 B 9 ? REGION (! E>? ABSOLUTE
SOLITUDE & -PLETE SECUR;Y REIGN$
SUPREME4
  ,WE _H NO?+ 6FE> EI F SAVAGES OR F
WILD B1/S4
  ,AF A NI<T'S SWEET REPOSE1 WE AWOKE
FRE% & R1DY = AC;N4 ,"! 2+ NO?+ 6DETA9
U1 WE />T$ ON \R J\RNEY4 ,WE 3T9U$
6BURR[ "? ! LAVA TUNNEL Z 2F4 ,X 0
IMPOSSI# 6MAKE \ "? :AT SOIL WE 7 MAK+
WAY4 ,! TUNNEL1 MOREOV]1 9/1D ( GO+ D[N
96! B[ELS (! E>?1 2CAME ABSOLUTELY
HORIZONTAL4
  ,I EV5 ?"\1 AF "S EXAM9,N1 T WE 7
ACTU,Y T5D+ UPW>DS4 ,AB T5 O'C 9 ! "D ?
/ATE ( ?+S 2CAME S CLE> T1 F9D+ ! *ANGE
V FATIGU+1 ,I 0 OBLIG$ 6SLACK5 MY PACE &F9,Y -E 6A HALT4                    #AEB
  8,WELL10 SD ! ,PROFESSOR QKLY1 8:AT IS
! MATT]80
  8,! FACT IS1 ,I AM DR1D;LLY TIR$10 0
MY E>NE/ REPLY4
  8,:AT10 CRI$ MY UNCLE1 8TIR$ AF A ?REE
H\RS' WALK1 & 0S EASY A ROAD80
  8,EASY 5\<1 ,I D>E SAY1 B V FATIGU+40
  8,B H[ C T BE1 :5 ALL WE H 6D IS 6G
D[NW>DS40
  8,I BEG YR P>DON1 SIR4 ,= "S "T ,I H
NOTIC$ T WE >E GO+ UPW>DS40
  8,UPW>DS10 CRI$ MY UNCLE1 %RU7+ 8
%\LD]S1 8H[ C T BE80
  8,"! C 2 NO D\BT AB X4 ,=! LA/ HALF
H\R ! SLOPES H BE5 UPW>D- & IF WE G ON 9
? WAY M* L;G] WE % F9D \RVS BACK 9
,ICEL&40
  ,MY UNCLE %OOK 8 H1D )! AIR (A MAN :O
DOES N WANT 6BE 3V9C$4 ,I TRI$ 63T9UE !
3V]S,N4 ,HE WD N ANSW] ME1 B ONCE M GAVE
! SIGNAL = DE"PURE4 ,8 SIL;E ,I ?"\ 0
ONLY CAUS$ 03C5TRAT$ ILL-TEMP]4
  ,H["E ? MI<T BE1 ,I ONCE M TOOK UP MY
LOAD1 & BOLDLY & RESOLUTELY FOLL[$,HANS1 :O 0 N[ 9 ADV.E ( MY         #AEC
UNCLE4 ,I DID N L 6BE B1T5 OR EV5 4T.ED4
,I 0 NATUR,Y ANXI\S N 6LOSE SI<T ( MY
-PANIONS4 ,! V IDEA ( 2+ LEFT 2H1 LO/ 9
T T]RI# LABYR9?1 MADE ME %IV] Z )! AGUE4
  ,2SS1 IF ! ASC5D+ PA? 0 M >DU\S &
PA9;L 6CLAMB]1 ,I _H "O S\RCE ( SECRET
3SOL,N & DELI<T4 ,X 0 6ALL APPE>.E TAK+
U BACK 6! SURFACE (! E>?4 ,T ( XF 0
HOPE;L4 ,E /EP ,I TOOK 3FIRM$ ME 9 MY
2LIEF1 & ,I 2GAN ALR 6BUILD CA/LES 9 !
AIR 9 REL,N 6MY M>RIAGE ) MY PRETTY LL
C\S94
  ,AB TWELVE O'C "! 0 A GRT & SU45 *ANGE
9 ! ASPECT (! ROCKY SIDES (! GALL]Y4 ,I
F/ NOTIC$ X F ! DIM9U;N (! RAYS ( LI<T :
CA/ BACK ! REFLEC;N (! LAMP4 ,F 2+ COAT$
) %9+ & RESPL5D5T LAVA1 X 2CAME LIV+
ROCK4 ,! SIDES 7 SLOP+ WALLS1 : "S"TS
2CAME Q V]TICAL4
  ,WE 7 N[ 9 :AT ! GEOLOGICAL PROFESSORS
CALL A /ATE ( TRANSI;N1 9 ! P]IOD (
,SILURIAN /"OS1 S CALL$ 2C ? SPECIM5 (
E>LY =M,N IS V -MON 9 ,5GL& 9 ! C.TIES
=M]LY 9HABIT$ 0! ,CELTIC N,N "KN Z,SILURES4                           #AED
  8,I C SEE CLE>LY N[10 ,I CRI$2 8!
S$I;T F ! WAT]S : ONCE COV]$ ! :OLE E>?
=M$ DUR+ ! SECOND P]IOD ( XS EXI/;E ^!
S*I/S & ^! CALC>E\S ROCKS4 ,WE >E TURN+
\R BACKS ON ! GRANITE ROCKS1 & >E L P F
,HAMBURG :O WD G 6,LUBECK 0WAY (
,HANOV]40
  ,I MI<T J Z WELL H KEPT MY OBS]V,NS
6MYF4 ,MY GEOLOGICAL 5?USIASM GOT !
BETT]1 H["E1 ( MY COOL] JUDG;T1 &
,PROFESSOR ,H>DWIGG HE>D MY OBS]V,NS4
  8,:AT IS ! MATT] N[80 HE SD1 9 A T"O (
GRT GRAV;Y4
  8,WELL10 CRI$ ,I1 8D Y N SEE ^! DI6]5T
LAY]S ( CALC>E\S ROCKS &! F/ 9DIC,N (
SLATE /RATA80
  8,WELL2 :AT !N80
  8,WE H >RIV$ AT T P]IOD (! _W'S EXI/;E
:5 ! F/ PLANTS &! F/ ANIMALS MADE _!
APPE>.E40
  8,Y ?9K S80
  8,YES1 LOOK2 EXAM9E & JUDGE = YRF40
  ,I 9DUC$ ! ,PROFESSOR ) "S DI6ICULTY
6CA/ ! LI<T ( 8 LAMP ON ! SIDES (! L;GW9D+ GALL]Y4 ,I EXPECT$ "S          #AEE
EXCLAM,N 6BUR/ F 8 LIPS4 ,I 0 V M*
MISTAK54 ,! WOR?Y ,PROFESSOR N"E SPOKE A
^W4
  ,X 0 IMPOSSI# 6SAY :E!R HE "U/OOD ME
OR N4 ,P]H X 0 POSSI# T 9 8 PRIDE- MY
UNCLE &A LE>N$ PROFESSOR- HE DID N L 6[N
T HE 0 WR;G 9 HAV+ *OS5 ! EA/]N TUNNEL1
OR 0 HE DET]M9$ AT ANY PRICE 6G 6! 5D (
X8 ,X 0 Q EVID5T WE _H LEFT ! REGION (
LAVA1 & T ! ROAD 0: WE 7 GO+ CD N TAKE U
BACK 6! GRT CRAT] ( ,M.T ,SNE6ELS4
  ,Z WE W5T AL;G ,I CD N HELP RUM9AT+ ON
! :OLE "Q1 & ASK$ MYF IF ,I DID N LAY
TOO GRT A /RESS ON ^! SU45 & PECULI>
MODIFIC,NS (! E>?'S CRU/4
  ,AF ALL1 ,I 0 V LIKELY 6BE MISTAK5- &
X 0 )9 ! RANGE ( PROBABIL;Y & POSSIBIL;Y
T WE 7 N MAK+ \R WAY "? ! /RATA ( ROCKS
: ,I 2LIEV$ ,I RECOGNIZ$ PIL$ ON ! L[]
LAY] ( GRANITIC =M,N4
  8,AT ALL EV5TS1 IF ,I AM "R10 ,I ?"\
6MYF1 8,I M/ C]TA9LY F9D "S REMA9S (
PRIMITIVE PLANTS1 & X W 2 ABSOLUTELY NEC
6GIVE WAY 6S* 9DUBITA# EVID;E4 ,LET U HA GD SE>*40                         #AEF
  ,I ACLY LO/ NO OPPORTUN;Y ( SE>*+1 &
_H N G"O M ?AN AB A HUNDR$ Y>DS1 :5 !
EVID;E ,I S"\ = CROPP$ UP 9 ! MO/
9CONTE/A# MANN] 2F MY EYES4 ,X 0 Q
NATURAL T ,I %D EXPECT 6F9D ^! SIGNS1 =
DUR+ ! ,SILURIAN P]IOD ! S1S 3TA9$ NO
FEW] ?AN FIFTE5 HUNDR$ DI6]5T ANIMAL &
VEGETA# SPECIES4 ,MY FEET1 S L;G A3U/OM$
6! H>D & >ID LAVA SOIL1 SU45LY F.D !MVS
TR1D+ ON A K9D ( S(T DU/1 ! REMA9S (
PLANTS & %ELLS4
  ,^U ! WALLS !MVS ,I CD CLE>LY MAKE \ !
\TL9E1 Z PLA9 Z A SUN PICTURE1 (! FUCUS
&! LYCOPODS4 ,! WOR?Y & EXCELL5T
,PROFESSOR ,H>DWIGG CD N ( C\RSE MAKE
ANY MISTAKE AB ! MATT]2 B ,I 2LIEVE HE
DELIB]ATELY CLOS$ 8 EYES1 & 3T9U$ ON 8
WAY )A FIRM & UNALT]A# /EP4
  ,I 2GAN 6?9K T HE 0 C>RY+ 8 OB/9ACY A
GRT D1L TOO F>4 ,I CD NO L;G] ACT )
PRUD;E OR -POSURE4 ,I /OOP$ ON A SU45 &
PICK$ UP AN ALM P]FECT %ELL1 : _H
UND\BT$LY 2L;G$ 6"S ANIMAL V M* RESEMBL+
"S (! PRES5T "D4 ,HAV+ SECUR$ ! PRIZE1,I FOLL[$ 9 ! WAKE ( MY UNCLE4      #AEG
  8,D Y SEE ?80 ,I SD4
  8,WELL1 SD ! ,PROFESSOR1 )! MO/
IMP]TURBA# TRANQUILL;Y1 8X IS ! %ELL (A
CRU/ACE\S ANIMAL (! EXT9CT ORD] (!
TRILOBITES2 NO?+ M1 ,I ASSURE Y40
  8,B1 CRI$ ,I1 M* TR\#D AT 8 COOL;S1 8D
Y DRAW NO 3CLU.N F X80
  8,WELL1 IF ,I MAY ASK1 :AT 3CLU.N D Y
DRAW F X YRF80
  8,WELL1 ,I ?"\-0
  8,I "K1 MY BOY1 :AT Y WD SAY1 & Y >E
"R1 P]FECTLY & 9CONTE/ABLY "R4 ,WE H
F9,Y AB&ON$ ! CRU/ ( LAVA &! ROAD 0: !
LAVA ASC5D$4 ,X IS Q POSSI# T ,I MAY H
BE5 MISTAK51 B ,I % 2 UNA# 64COV] MY
]ROR UNTIL ,I GET 6! 5D ( ? GALL]Y40
  8,Y >E Q "R Z F> Z T IS 3C]N$00' ,I
REPLI$1 8& ,I %D HI<LY APPROVE ( YR
DECI.N1 IF WE _H N 6FE> ! GRTE/ ( ALL
DANG]S40
  8,& :AT IS T80
  8,WANT ( WAT]40
  8,WELL1 MY DE> ,H5RY1 X C'T 2 HELP$4
,WE M/ PUT \RVS ON R,NS40  ,& ON HE W5T4                     #AEH