Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Circum-Baikal Railway
Table title:
List of stations and stops
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Distance (km) </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Location </th></tr>
<tr> <td colspan=1 rowspan=1 > 159 </td><td colspan=1 rowspan=1 > 159 km stop </td><td colspan=1 rowspan=1 > Kultuk </td></tr>
<tr> <td colspan=1 rowspan=1 > 156 </td><td colspan=1 rowspan=1 > Kultuk station </td><td colspan=1 rowspan=1 > Kultuk </td></tr>
<tr> <td colspan=1 rowspan=1 > 154 </td><td colspan=1 rowspan=1 > 154 km stop </td><td colspan=1 rowspan=1 > 154 km settlement </td></tr>
<tr> <td colspan=1 rowspan=1 > 149 </td><td colspan=1 rowspan=1 > 149 km stop </td><td colspan=1 rowspan=1 > Angasolsky village </td></tr>
<tr> <td colspan=1 rowspan=1 > 139 </td><td colspan=1 rowspan=1 > 139 km stop </td><td colspan=1 rowspan=1 > Sharyzhalgai village </td></tr>
<tr> <td colspan=1 rowspan=1 > 138 </td><td colspan=1 rowspan=1 > Sharyzhalgai stop </td><td colspan=1 rowspan=1 > Lokomotiv Voluntary Sports Society </td></tr>
<tr> <td colspan=1 rowspan=1 > 137 </td><td colspan=1 rowspan=1 > 137 km stop </td><td colspan=1 rowspan=1 > VSZhD Rest stop </td></tr>
<tr> <td colspan=1 rowspan=1 > 134 </td><td colspan=1 rowspan=1 > 134 km stop </td><td colspan=1 rowspan=1 > 134 km village </td></tr>
<tr> <td colspan=1 rowspan=1 > 129 </td><td colspan=1 rowspan=1 > 129 km stop </td><td colspan=1 rowspan=1 > Baklan village </td></tr>
<tr> <td colspan=1 rowspan=1 > 120 </td><td colspan=1 rowspan=1 > 120 km stop </td><td colspan=1 rowspan=1 > Maritui settlement </td></tr>
<tr> <td colspan=1 rowspan=1 > 119 </td><td colspan=1 rowspan=1 > Maritui station </td><td colspan=1 rowspan=1 > Maritui settlement </td></tr>
<tr> <td colspan=1 rowspan=1 > 110 </td><td colspan=1 rowspan=1 > 110 km stop </td><td colspan=1 rowspan=1 > Poloviny village </td></tr>
<tr> <td colspan=1 rowspan=1 > 107 </td><td colspan=1 rowspan=1 > 107 km stop </td><td colspan=1 rowspan=1 > Ponomareva settlement </td></tr>
<tr> <td colspan=1 rowspan=1 > 106 </td><td colspan=1 rowspan=1 > 106 km </td><td colspan=1 rowspan=1 > Ivanovka settlement </td></tr>
<tr> <td colspan=1 rowspan=1 > 102 </td><td colspan=1 rowspan=1 > 102 km stop </td><td colspan=1 rowspan=1 > Shumikha village </td></tr>
<tr> <td colspan=1 rowspan=1 > 98 </td><td colspan=1 rowspan=1 > Ulanovo station </td><td colspan=1 rowspan=1 > Khvoiny Tourist Center </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 80 </td><td colspan=1 rowspan=1 > 80 km stop </td><td class="highlighted"  colspan=1 rowspan=1 > "Retro" Tourist Center </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 80 </td><td colspan=1 rowspan=1 > 79 km stop </td><td class="highlighted"  colspan=1 rowspan=1 > "Silver Key" Tourist Center </td></tr>
<tr> <td colspan=1 rowspan=1 > 74 </td><td colspan=1 rowspan=1 > 74 km stop </td><td colspan=1 rowspan=1 > Baikal settlement </td></tr>
<tr> <td colspan=1 rowspan=1 > 72 </td><td colspan=1 rowspan=1 > Baikal station </td><td colspan=1 rowspan=1 > Baikal settlement </td></tr>
</table>
Question:
What tourist locations are near the 80 km marker of the Circum-Baikal Railway?
Answer:
A series of tourist areas are in operation at 80 km: "Retro" and the "Silver Key".