add basecamp tarp image

handbook/baseops.html

@@ -42,9 +42,11 @@ sketched SRT rigging guides and some cave survey notes - in addition to those re
 <h2>Preparing base camp at the beginning of expo</h2>
 <p>
  <figure align=center>
-  <img src="i/base-tarp2017.jpg" width=50%  hspace=5px alt="Tarp on the end in 2017">
+  <img src="i/base-tarp2017.jpg" width=40%  hspace=5px alt="Tarp on the end in 2017">
+  <img src="i/tatty_hut_tarp.jpg" width=40%  hspace=5px alt="Tarp on the end in 2017">
   <figcaption><em>Tarp at the end of the hut in 2017.</em></figcaption>
 </figure> 
+
 We have the use of the new potato hut, its loft, and a cupboard - externally accessed - in the old potato hut. 
 At the beginning of expo the cupboard and the loft are rammed full of stuff from last year and need to be emptied.
 <p>One of the first things to do is to put down the floor covering and gaffer-tape table-cloths to the tables in the potato hut. 
@@ -56,7 +58,7 @@ Then the bier tent kitchen (tables, cookers, gas cylinders, pans and plates, and
  <figure align=center>
   <img src="i/base-tarp.jpg" width=50%  hspace=5px alt="Tarp on the side in 2018">
   <figcaption><em>Tarp at the side of the hut in 2018.</em></figcaption>
-</figure> 
+ </figure> 
 The tarp needs to be erected which extends from the end or, from 2018 the side, of the potato hut to provide a shaded 
 and rain-free area for piles of expo stuff and for people to lurk.
 <p>Part of the area next to the hut is the winter curling "rink" - a lower area of gravel which we can't use for