Yolyn Am canyon was a welcome stop in our exploration of Mongolia last summer. We had been on the steppe for over a week, baking under the Eurasian high summer sun, and we were headed to the even hotter Gobi Desert when we boarded a tiny propeller plane for the south and the Gurvan Saikhan Mountains.

From flat, scrubby expanses, we arrived in a deep, cool gorge for an invigorating hike inside towering walls. Yolyn Am (named after the yol, or lammergeyer, a vulture-like bird) is known in part for its ice field that lingers well into the summer, and we saw remnants of this as we criss-crossed a running stream at the base of the canyon.

Although the hike was lengthy and we had to pick our way carefully in some of the narrower stretches, there was only minor danger encountered that day. Nevertheless, we got a huge kick out of all the warning or admonitory signs on our way into the trailhead! Can you determine what to watch out for or refrain from doing here?