Welcome Back!

I hope everyone had a good summer vacation! I'm looking forward to teaching you again.
During the summer vacation I did some traveling and I found this giant rock.
Here are two trivia questions about it:

Do you know what part of Japan this rock is in?

and

Do you know what this rock's name is? (Hint: What does it look like?)

Please tell me what you did during summer vacation. See you in class!