AlanK is on track. Thought you folks would never get it.

Now that we know there is a pit on a Pacific island, and another in the Californian desert, what is the connection? What events?

Again;

B## + P = B## + U = B## + X# = (BIG/P), # is 1 or 2 or 9.
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Verum audaces non gerunt indusia alba. - Ipsi dixit MCMLXXII