If you are afraid of what could happen in terms of violence, you'll probably have to go more far away than you might think, assuming you live in Buenos Aires. When the last crisis happened, I was living in Martinez, San Isidro(*).
Although it was way better than other places, gun armed robberies, larceny and express kidnappings where also happening, not that often, but still.
Maybe you should look to move away from any big city, and/or to another province, investigating and choosing some nice place beforehand.
If you choose to buy land, always remember it has it's risks. You'll have to pay taxes on it, it can be usurped if you don't live there, while buying and selling you'll have to pay a percentage on taxes, the tittle and real state agent, and it will be hard to sell if you suddenly need to.
If you think it might be unsafe to stay where you are currently living, it be a good moment to move if you can (considering job opportunities, family, will to move far and resources), it might be a good time to do so.
Also if you really want to buy property, believing it's value won't dip and will go up after things look better, you could try waiting for a good opportunity. Every now and then people need to sell fast even if cheaper, but you'll probably have to have the cash(**) available fast, and making several offers until you find someone desperate enough so you get a good deal.
Lastly, about gold, if you think you might have to sell it soon, the spread between buy/sell price will make you lose more money than saving in US dollars. Plus dollars are useful to buy property, leave the country if you want to, and it's more liquid than gold.
Other investments you might want to consider are sovereign bonds, the more trustworthy the issuing country is, the less dividends, so you'll get to choose how much you want to risk. There even are some decent bonds from Argentinian provinces in US dollars. But I wouldn't be surprised if you choose some other one.
Personally I don't think it will get as bad as you seem to think, but I guess you should invest according to what you believe.
(*) Note for people from other places: this is among the wealthiest/safest/more expensive places to live near Buenos Aires city without counting some Gated communities and Puerto Madero, the most (insanely) expensive neighborhood in Buenos Aires city).
(**) Again note for other readers: Most properties are bought in US dollars and in cash. Yes, seriously. Mostly because our currency tends to lose value compared to the US dollar, many people try to avoid depositing cash in the bank (some store them in a safe inside the bank, or even at home) for historical reasons; and there's a lot of tax evasion happening and bank transfers don't work well with this.