To resolve you can group the first 4 Rows into a container . In case my I called Wrapper as you will see in CSS. Then I used the class .col2 to define the behavior of the image that is actually the background of a col-xs-2 that has position:absolut and height de 100% to stay forever of the height of the Wrapper . This means that if you want 8 Rows inside the Wrapper the image will still occupy the entire height!
OBS 1: The styles I used in [class^=col-] are just for you to see the Grid format. Now the class .wrapper and .col2 you will need!
OBS2: I put the entire Grid inside the default class of Bootstrap .container , but if you want Grid to occupy 100% of screen width just remove to div.container ok.
[class^=col-] {
padding-top: 10px;
padding-bottom: 10px;
background-color: #eee;
background-color: rgba(86,61,124,.15);
border: 1px solid #ddd;
border: 1px solid rgba(86,61,124,.2);
box-sizing: border-box;
}
.wrapper {
position: relative;
box-sizing: border-box;
margin: 0 -15px;
padding: 0 15px;
}
.col2 {
position: absolute !important;
right: 0;
height: 100%;
background-image: url(http://placecage.com/200/200);
background-size: cover;
background-position: center;
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" >
<div class="container">
<div class="wrapper">
<div class="row">
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-2 col2">.col-xs-2</div>
</div>
<div class="row">
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
</div>
<div class="row">
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
</div>
<div class="row">
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
</div>
</div>
<div class="row">
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
<div class="col-xs-1">.col-xs-1</div>
</div>
<div class="row">
<div class="col-xs-12">.col-xs-12</div>
</div>
</div>
