Editing Geography of Andorra (section)

====1970 Pas de la Casa avalanche====
The 1970 Pas de la Casa avalanche was a powder-snow avalanche that happened after a severe snowstorm left {{convert|2|m|ft|sigfig=3}} of new snow atop the existing snow pack on the mountain slopes above [[Pas de la Casa]]. The avalanche began at an elevation of {{convert|2640|m|ft|0|abbr=on}} on the upper slopes of the [[Pic d'Envalira]] ({{convert|2825|m|ft|0|abbr=on|disp=or}}), accelerated down the 35°&nbsp;slope and spilled over six bends of the old CG-2 road that winds its way down the mountain to the village of Pas de la Casa, which is at {{convert|2100|m|ft|0|abbr=on}}. It then hit the village, damaging several buildings including a dispensary and killing a nurse.<ref name="meffre2"/> In 1970, Pas de la Casa had far fewer buildings than it does now, so the damage was relatively limited. In later years as development of the ski resort continued, plans for avalanche control measures were studied, but it was not until 1985 that strong protective features including {{convert|250|m|ft|0|abbr=on}} of windbreaks and {{convert|500|m|ft|0|abbr=on}} of snow fences were installed.<ref name="meffre2"/><!--<ref name="perdand1"/>todo--> The new CG-2 goes through the [[Envalira Tunnel]], thus avoiding Pas de la Casa and the risk of avalanches.