TOO GOOD TO FACT CHECK: Donald Trump cancels visit to ancient Israel fortress because ‘he cannot land his helicopter’ on site. US President's aides reportedly refuse to go up hilltop site with cable car (Chloe Farand, The Independent). This rumor was started by Israel's Channel 2. The other explanation, also based on "reports," was that the cancellation was due to the desert heat.
Background here and links.