The expedition of the portal was not bearing any fruits. And Henry was losing soldiers left to right. That is why he was getting very angry. But he was ordered by the Viscount that he had to stay there and secure the golden pit that is in the temple. From what he had heard this was a very important matter for the Viscount. That is why he was under so much pressure. But he didn't know what else to do?
The black fennec fox that came back told gave the information that the portal was supposed to be the gate to El Dorado. But as that fox came out he was very badly wounded. The people of the Doja city tried to cure him but they were not able to save him. Henry make sure that he squeezed every bit of information that he could get from the caretakers of that fox. After all, he was bound to give more information about the portal. But his labor was fruitless.