diff --git a/index.html b/index.html
index 67cf2af..28d5062 100644
--- a/index.html
+++ b/index.html
@@ -62,37 +62,37 @@ redirect_from:
   <div class="row">
     <div class="col-lg-6">
       <a href="/media/gallery/1.jpg" class="thumbnail">
-        <img src="/media/gallery/1-thumb.jpg">
+        <img src="/media/gallery/1-thumb.jpg" alt="A sandy beach with grass and trees in the distance">
       </a>
     </div>
 
     <div class="col-lg-6">
       <a href="/media/gallery/2.jpg" class="thumbnail">
-        <img src="/media/gallery/2-thumb.jpg">
+        <img src="/media/gallery/2-thumb.jpg" alt="A grassy field with rock and trees">
       </a>
     </div>
 
     <div class="col-lg-6">
       <a href="/media/gallery/3.jpg" class="thumbnail">
-        <img src="/media/gallery/3-thumb.jpg">
+        <img src="/media/gallery/3-thumb.jpg" alt="A pond with papyrus">
       </a>
     </div>
 
     <div class="col-lg-6">
       <a href="/media/gallery/4.jpg" class="thumbnail">
-        <img src="/media/gallery/4-thumb.jpg">
+        <img src="/media/gallery/4-thumb.jpg" alt="A jungle with trees and grass">
       </a>
     </div>
 
     <div class="col-lg-6">
       <a href="/media/gallery/5.jpg" class="thumbnail">
-        <img src="/media/gallery/5-thumb.jpg">
+        <img src="/media/gallery/5-thumb.jpg" alt="A cave lit with torches">
       </a>
     </div>
 
     <div class="col-lg-6">
       <a href="/media/gallery/6.jpg" class="thumbnail">
-        <img src="/media/gallery/6-thumb.jpg">
+        <img src="/media/gallery/6-thumb.jpg" alt="A cave filled with lava">
       </a>
     </div>
   </div>