Mine cart puzzle

Anonymous	Two hours ago I arrived in the Ruins of Little Boston, and I found this puzzle that I have been struggling to solve for two hours .Thx https://prnt.sc/6cPnqJNYqu73 Edited 22 seconds later by Anonymous. 1 year ago Quote	1 year ago Quote

Anonymous	How do you access to that location ? There are two caves entrance and dead end , can't go anywhere, is there a secret switch ? 1 year ago Quote	1 year ago Quote