This is over 2000 lbs easily, about 1/4 the size of a car or larger, that we slid as it was highly unstable and we were going to be working below (if you look carefully you can see where we were working about 5 ft below.. it was on the edge of rolling and we thought it was better to safely make it go down than have us under it and come down while we were working. Just for note it took us 30-45 min to hike down that distance.. at least 1/4 mile to where the video stopped... if not more. Filmed by my friend. Please note that we could visibly see all the way down and had another person across the bowl as a spotter... This area is soo remote that there is noone around which also means no phones... satellite phones have trouble working as well.
Be sure to stay safe in in the mountains.. I have seen a few uncontrolled large rocks come down this year from a safe distance. Some pf them even took part of the mountain with them. Even the smaller rocks seen here (still larger than your head) will hurt and break stuff! Actually the 1 square inch rocks are painful. On all the trips I do in these mountains I usually get hit by the pesky 1 square inch rocks (on my legs).. It doesn't hurt for more than a minute though.. I just look for the large ones coming down. Also take note ones like this can come down by people just climbing up.
So short of the matter stay safe. If you have to let one go down make sure you know no one is below it and enjoy the experience as it is a scary reminder (which is why we have a few choice words).
Towards the end of the video you can compare my head to the smaller rocks around... which are not so small.
https://youtu.be/9zAibBlrNTsIf theres a way to make videos auto appear i'm not seeing the button