I was watching The Return of the King and just after Frodo and Sam destroy the One Ring, they run out of the mountain and hide on top of a rock as the volcano erupts and lava flows past them. Is this actually feasible or would they have been roasting alive?

Here's an image for reference.

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  • $\begingroup$ Spoiler alert... $\endgroup$ – BMS Mar 9 '14 at 19:57
  • $\begingroup$ thats gandolf on the eagle and not frodo and sam. $\endgroup$ – guru Mar 9 '14 at 20:08
  • $\begingroup$ @guru correct, Sam and Frodo are on the rock. $\endgroup$ – Caleb Jares Mar 9 '14 at 20:09
  • $\begingroup$ its not possible to say without actual calculation.it doens't require physics though to say that it is going to be uncomfortably hot. stone is not a very good conductor of heat though so at least it doesn't appear ridiculous. not as unbelievable though as star wars - where spacecrafts make sound in space and light from laser weaponry travels so slowly that it can actually be seen moving from the gun to the target! $\endgroup$ – guru Mar 9 '14 at 20:29
  • $\begingroup$ Some calculations can be found at physics.stackexchange.com/a/136733/26969 - more related to radiated heat but you get the idea. $\endgroup$ – Floris Sep 23 '14 at 2:52

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