Mountain railways.
high
Tall
high, high-pitched, shrill, piercing, soaring
tors
Teaching high school.
"Temporary" is a synonym of the word ephemeral in surviving high school.
Very high refers to something extremely tall or vertically imposing in height. A synonym for very high that starts with the letter t is towering.
Jubilance, if your asking for a synonym to "high spirits joyful"
the "High Street"
The farmers demanded regulation of the railroads because the railroads were abusing government land grants and taking away land from the farmers. High rates were also being changed for transportation.
Alpine Bastille and altitudinous penitentiary are synonym of high jail.
high or increased birth rate.