
 
		portion  of  the  wall,  and  on  this  only,  large  monoliths  
 were inserted, most of which  have  fallen away ;  
 but  those  still  standing  show  that  they  were  equidistant. 
   Here too the top of the wall has been neatly  
 paved with slabs of granite,  and must have formed  a  
 broad  promenade,  presumably  approached  by steps  
 from  a point near  the main entrance.  Here one can  
 still  walk with  ease, whereas on  the inferior  portion  
 of the wall it is now scarcely possible to  scramble. 
 The  labyrinthine  character  of  the  interior  will  
 be  best  grasped  by a glance  at  the  plan.  Entering  
 from the northern portal, we  at once plunge  into  its  
 intricacies.  The great  and  astounding feature is the  
 long  narrow  passage  leading  direct  from  the  main  
 entrance to the  sacred  enclosure,  so  narrow in  parts  
 that two people  cannot walk  abreast, whilst on either  
 side  of  you  rise  the  stupendous walls,  thirty feet  in  
 height,  and  built with such  evenness  of  courses  and  
 symmetry  that  as  a  specimen  of  the  dry  builder’s  
 art it  is without a parallel.  The large blocks  of  cut  
 stone used in Egyptian, Greek,  and  Homan  masonry  
 must  have  been  comparatively easy to  deal with  as  
 compared with  these  small  stones  of  rough  granite  
 built  in  even  courses  in  a circular wall of  immense  
 thickness  and  height.  The  idea  at  once  suggests  
 itself that the people who  erected  theseVwalls  had  at  
 one time been accustomed to build in bricks, and that  
 in  the  absence of  this  material  they hap.  perfected  a  
 system  of  stone-building  to  represent  as  nearly  as  
 possible the appearance of brick;  also  another reason  
 for the use  of  small  stones may have  been to  enable 
 them to  construct the  tower and curves with greater  
 accuracy.  The facings of the  stones  are  all uniform,  
 but  most  of  them  run  back  into  the  wall  irregularly, 
   acting  in  the  same  way  as  throughs  in  our  
 dry-built  walls  at  home  in  preserving  the  building  
 from  falling.  In  this  narrow  passage,  at  point  S,  
 is the  remarkable  hole,  executed with  perfect  neatness  
 through  the  thickest  part  of  the  wall,'  about  
 the actual use  of which  I  am  able to give no definite  
 theory.  It  could  not  have  been  used  for  drainage  
 or defence;  and in  the  fortress  above  there  are  two  
 similar tunnels  equally  inexplicable. 
 The  actual  approaches  to  the  sacred  enclosure  
 are most carefully defended with buttresses  on either  
 side, into which  a form of  portcullis  has  been fixed,  
 with two grooves,  one  running  down  each  side,  presumably  
 originally intended to receive a wooden door;  
 but at  a later  period  all  these  entrances  have  been  
 carefully walled up,  for what purpose it is  difficult to  
 say.  It naturally occurred  to  us that  this had  been  
 done at a time  of danger for protection, but the neatness  
 with which the  blocking-up  walls  are  executed  
 is  against this theory. 
 At point Y on the plan there  is  a  remarkable instance  
 of the two periods of building.  Here, in front  
 of  the  sacred' enclosure, the wall was decorated with  
 courses  of  black  slate  in  the  older  and  better wall,  
 whereas they^are omitted in the inferior  continuation. 
 At  point E there is  a raised platform immediately  
 in  front  of  the  large  round  tower,  covered  with  a  
 flooring  of  thick  cement,. supported  by large  stones