Clutch Pedal Very Hard To Press

Just curious what exactly could be wrong with the clutch. Truck is in the shop but just curious to see opinions till I hear something from the shop. Yesterday I had pulled into a washout and shut the truck off. Got done and started the truck and went to push in the clutch it was very hard to press. Got home which is 6 miles away from the washout and it was still very hard to push in. While it was engaged I could here grinding noise and didn’t sound healthy. Assumed clutch was fried. This morning started it to take it to the shop and when I pressed the clutch in it was a little stiff but nothing like it was yesterday, nor did I hear the grinding noise that I heard yesterday. Seemed like in low speeds truck seemed to shake. It’s a hydraulic clutch. Also looks like coolant line to the trans cooler is leaking. Another thing I saw was top of transmission and the tower is covered in oil. What in the world is going on ? Attaching picture of everything I can see