| A newly formed river then flowed through the Canyon formed by the mudflow. |
|
| Two villages, Panabaj and Tzanchaj, were entombed by a mudflow half a mile wide and an estimated 15-20 feet deep. |
|
| In 1845 a mudflow from Mount Ruiz killed approximately 1,000 people on farms near the site where the town of Armero was later built. |
|
| In the 1985 mudflow, which was smaller in volume than the 1845 mudflow, more than 20 times as many people were killed. |
|
| There are schools that were spared the mudflow, but they are now full of displaced people. |
|
| Locally, a basalt and basalt-clast mudflow occurs near the top of the formation. |
|
| Example for drainage measures to prevent slopes from sliding respectively to avoid mudflow in mountains. |
|
| The hot gases and magma melted the ice and snow that covered the mountain and the resulting mudflow continued throughout the night and the following day. |
|
| Similarly, the big polluted river that snakes its way like a mudflow through the coastal industrial city started out high in the distant mountains as a pristine stream. |
|
| They have faced further challenges since a mudflow severely damaged their crops and reduced the quality of the land. |
|
| The city suffered from severe earthquakes in 1887 and 1911, and a mudflow down the Malaya Almaatinka River in 1921 caused considerable destruction and loss of life. |
|
| Great destruction also can result when ash collects on a high snowfield or glacier, melting large quantities of ice into a flood that can rush down a volcano's slopes as an unstoppable mudflow. |
|
| Landslide, debris flow and mudflow problems are enhanced by the pressure of uncontrolled human activity and land use in a mechanically unstable environment. |
|
| A poignant point brought out in later studies of the Nevado del Ruiz eruption was the observation that in 1845, a similar mudflow wiped out 1400 people, virtually the town's entire population. |
|
| Volcanologists around the world have paid more heed to the danger of lahars since 1985, when a moderate eruption in Colombia triggered a mudflow that claimed 25,000 lives. |
|
