can rs485 shield and loRa shield be stacke on arduino?

Projects Networking, Protocols, and Devices
4

you can stack the shields but have to avoid conflicts
e.g. if the Lora pin mapping is

// Pin mapping  for Dragino LoRa Shield 
const lmic_pinmap lmic_pins = {
    .nss = 10,
    .rxtx = LMIC_UNUSED_PIN,
    .rst = 9,
    .dio = {2, 6, 7},
};

and the RS485 shield also uses pin 10
you could stack the RS485 on the Arduino and then the Lora shield having cut or bent pin 10 on the Lora shield so it does not connect thru to the RS485 shield
then put a jumper between pin 10 on the Lora shiled to a spare pin - update the Lora shield pin mapping accordingly