You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
Anything marked as 'Landmark' is there for Dog to 'mark' as his territory and establish his 'Mabari Dominance' buff in that area. It's also a minor side quest, and you get some exp for Dog marking every landmark item in the game (As well as completion % towards 100%). If you missed Lothering before it's destroyed though, you won't be able to complete it that playthrough.
Where's the Kaboom? There was supposed to be an Earth-shattering Kaboom!