Another current story from Colorado:

Altitude sickness kills college student on hiking trip



From the article:
A Pennsylvania college student died last week from altitude sickness during a hiking trip in the Rocky Mountains, according to relatives....
... the 20-year-old started vomiting on the Conundrum Creek Trailhead. ...which begins at 8,765 ft. and reaches an elevation more than 11,000 ft. ....student had already died by when they finally reached her at 5 a.m. Friday.


Vomiting at the trail head is a NO GO situation!!!