Subsidence in the Central Valley and California HSR

Trains Magazine Passenger
1

Gee, I wonder how this is going to impact the structures built for California HSR, some of those subsidence areas look pretty close to the HSR line.[:O]

https://www.youtube.com/watch?v=BT3lU8CYc9c

2

Why no sound?

3

Check your speakers, it works for me.

4

Sound when I played it.