No apparent danger : the true story of volcanic disaster at Galeras and Nevado del Ruiz

On January 14th 1993, a team of scientists descended into the crater of Mt.

Galeras, a restless volcano in southern Colombia. Several hours later, Galeras erupted, killing nine people instantly.

Two geologists, Marta Calvache and Patty Mothes, raced into the rumbling inferno to save, among others, expedition leader Stanley Williams.

For Calvache and her fellow scientists, this was the second Colombian volcanic disaster in less than a decade.

No Apparent Danger links the events surrounding those two eruptions - beginning at Nevado del Ruiz, where 23,000 people were killed in 1985 - to tell a story of adventure and survival in which clashing cultures and scientific arrogance contributed to unnecessary loss of life.

Dramatic and powerfully written, it is an unforgettable narrative about the deadly results of human folly.