| About 800 feet below the spot where their fall commenced was a small bergschrund, or crack across the ice. |
| I reach the bergschrund in less than an hour, only to find that I've miscalculated. |
| The bergschrund may be invisible in winter if snow covers it, but summer melting usually brings it out. |
| On arriving, we explored a crevasse and examined the bergschrund at the top. |
| We hurried on and managed to get across the bergschrund before the last rays of sunlight left the summit of the Jungfrau. |
| There we thankfully left the arte, and, turning to the right, struck straight down the ice-slope towards the bergschrund. |
