Significant nominal peaks in the price of silver tend to come after significant nominal peaks in the Dow. This has been the case for the last 90 years at least.
It is no coincidence that significant silver rallies follow after significant Dow rallies end. It is simply a natural reaction to what caused the stock market rally as well as the effects of that rally. So, if it happened before, it will certainly occur again.
These stock market rallies are driven by the expansion of the money supply, causing a big increase in value of paper assets (including stocks) relative to real assets. When the increase in credit or the money supply has run its course, and is unable to drive paper price higher; value then flees from paper assets to safe assets such as physical gold and silver, causing massive price increases.
Below is a 100-year inflation-adjusted silver and gold chart (generated at macrotrends.net):