francesco cavaliere / syllabize/title> <STYLE type=text/css>  </STYLE> </head> <body bgcolor="#ffffff"> <div align="center"><center><table width="800" border="0"> <tr> <td valign="top" width="350" bgcolor="#ffffff"> <p align=left> <br> <br> Form a circle with blocks around created where you cut the blocks. Cut the circle in a spiral from<br> the top of the last block to the ground ahead of the first block, This will make it easy to construct a done.<br> Build up walls, overlapping the blocks and shaping them so that lean inward. Cut a hole under the wall<br> for the cold sink and entrance. The last block must initially be larger than the hole. Place the block on top, of the igloo then<br> from inside, shape and wiggle it to slot exactly into the hole. Hot air from your body and stove rises and is trapped inside the dome.<br> Cold air falls into the sink and flows away to the outside. It is essential to cut ventilation holes in the walls with anice axe.<br> With warmth inside the igloo, the surface of the walls will melt and freeze over, to form a smooth, airtight ice surface.<br> The roof over entrance tunnel prevents snow from blowing into igloo. <br> <br> </td> <td valign="top" width="50" bgcolor="#ffffff"> </td> <td valign="top" width="400" bgcolor="#ffffff"> </td> </tr> </table> </body> </html>