C 547 1 
time almoft impregnable, the Hills being kom 60 to 
90 Yards perpendicular in Height, and their Sides 
very fteep, which are very apparent in the Plan. 
From one Part of this Camp they could fee a great 
way towards Mahon , and all the Way down the 
great Vale of Tork> from near Hambleton- Hills 
to Howden, and from Londesburgh (where I 
doubt not but they kept a Watch-Guard) they could 
fee all the Way from Howden to Brough-Ferry » 
Hence they could not be furprifed from the South- 
Eaft, South-Weft, or North-Weft Quarters 5 there- 
fore they had only chiefly the Eaftern Sides to for- 
tify > and how they have done that, the Plan of their 
Camp (Tab. IX.) will better fhew than 1 can defcribe. 
Another Reafon for their fixing here is very evi- 
dent 5 becaufe, at the Foot of the Hill, not 100 
Yards from where the Roman Pavement was, there 
are two Springs of fine clear Water, which, united, 
form what they call the Beck . Thefe Springs never 
fail, even in the hotteft and dried Summers (a rare 
thing to be met with upon the Wolds ) and there is 
not another Spring within two Miles of that Place, 
but what is either quite dried up, or greatly dimi- 
nifhed in a dry Seafon $ infomuch that at this Day, 
in fome Seafons, the People are obliged to drive 
their Cattle feveral Miles hither for Water. 
From this Situation their Army could never want 
Provifions, having a free Communication either by 
Land or Water, with the Southern Parts of the 
Ifland. 
All that Part of the Plan of the Camp (Tab. IX.) 
marked a. a. a, a. defcribes deep Valleys $ from the 
Bottom of which to the Top of the Hills are in general 
B b b b from 
