LTCUSD has returned to its long-term trendlines after some consolidation around $140.
I believe that if the buying interest in crypto continues over the next few months, we could see a test of the ATH sometime between late March (where the middle of the trendlines meet the ATH) or early May (where the bottom trendline crosses $420).
The first fail scenario would bring us back down to the $140 and a retest of the support that might be there.
The worst case scenario is a return to sub-$100 prices, however with BTCUSD's recent return to the $10,000 level and most cryptos being correlated to it, I highly doubt we see that occur unless BTCUSD hits another rut as well.