New student,

We had 10 - 12 times increase in the span of 5- 10 years depending on the location not 10 - 12 times in a year.

It had to do a lot with the sudden influx of money into Nepal from money from foreign employment.  Land prices has been doubling in KTM since last 30 years. 30 Years ago my father bought a land for 17K per ana that sold at 40K per ana 25 years ago, 1K per ana 20 years ago. 4k per ana 15 years ago, 10k per ana 10 years ago...and 35K per ana 5 years ago. The land prices started going up way before the foreign employment money started pouring. It grew more rapidly once the foreign money came in.

Again, putting 1 karod in a bank is not a bad idea either...its a preference. Some people find more peace of mind on have their money locked into a land than in a bank due to inflation, Bank bankruptcy and Ransom issues.