Adventurous investors like you won’t want to miss out on what could be a truly astonishing opportunity…You see, over the past three years, this AIM-listed company has been quietly powering ahead… rewarding its shareholders with generous share price growth thanks to a carefully orchestrated ‘buy and build’ strategy.And with a first-class management team at the helm, a proven, well-executed business model, plus market-leading positions in high-margin, niche products… our analysts believe there’s still plenty more potential growth in the pipeline.Here’s your chance to discover exactly what has got our Motley Fool UK investment team all hot-under-the-collar about this tiny £350+ million enterprise… inside a specially prepared free investment report.But here’s the really exciting part… right now, we believe many UK investors have quite simply never heard of this company before! The high-calibre small-cap stock flying under the City’s radar Paul Summers | Monday, 26th October, 2020 | More on: GGP Our 6 ‘Best Buys Now’ Shares Image source: Getty Images. Click here to claim your copy of this special investment report — and we’ll tell you the name of this Top Small-Cap Stock… free of charge! Paul Summers has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors. Enter Your Email Address I was bullish on explorer Greatland Gold‘s (LSE: GGP) potential when I first looked at the miner back in August 2019. Since then, the shares have soared from under 2p to a little over 23p, making GGP one of the best-performing UK-listed stocks over the last year. Had one bought back then, one would be sitting on a gain of over 1,200%! Today — 14 months later — I’m taking another look. 5G is here – and shares of this ‘sleeping giant’ could be a great way for you to potentially profit!According to one leading industry firm, the 5G boom could create a global industry worth US$12.3 TRILLION out of thin air…And if you click here we’ll show you something that could be key to unlocking 5G’s full potential…Greatland Gold: a lucky punt?Now, let’s be clear from the outset — there was an awful lot of luck in my call. Investing in any miner, let alone a minnow, is fraught with risk.First, there’s no guarantee it’ll find what it’s looking for, or be able to extract sufficient quantities of what it does find to make the business profitable. Second, mining can be an expensive business. Many companies go bust before they’ve a chance to make their mark. Third, miners have no control over the prices of the commodities they extract. Fourth, mining shares have a tendency to ‘pop and drop’, catching unwary investors on the price spike.All that said, Greatland Gold has certainly done all it can to put itself in a great position to continue rewarding investors. Recent news has only served to boost the investment case further.Good progressIn August, the company announced it has commenced drilling at its delightfully-named Scallywag prospect in the Paterson region of northern Western Australia.As CEO Gervaise Heddle commented, many of the targets in this region “display similar geophysical characteristics” to Greatland’s stunning Havieron gold-copper discovery “where ongoing drilling under a Farm-in with Newcrest has returned a series of outstanding results.” This certainly bodes well. Speaking of Havieron, the company has also announced it had secured a mining lease relating to the project. Assuming GGP is able to get it into production, this could eventually become one of the most valuable gold mines in the world.On top of this progress, Greatland Gold has benefited hugely from the surge in the price of the precious metal since the coronavirus struck. Despite coming off the boil in recent months, the value of gold has still soared around 25% since the beginning of 2020!Sell or hold?Regardless of whether the GGP share price would be where it is in the absence of the pandemic, the fact remains that a lot of early holders will be sitting on big profits. What now? For me, an optimum strategy for existing owners might be to bank some profit and keep the rest invested. After all, such an incredible return over such a short period shouldn’t be taken for granted. Greatland Gold remains a company in its infancy and a lot could still go wrong. Notwithstanding, keeping some money invested will allow holders to benefit from any further positive news on drilling. Naturally, no one knows where the gold price will go in the short term either. Since there are simply too many factors that could impact sentiment, one potentially great destination for GGP profits, in my opinion, would be VanEck Vectors Junior Gold Miners ETF.Diversified across 80 small- and mid-cap miners, this fund ensures investors have exposure to the gold price without the risk the comes from owning just one stock. The ongoing charge is a reasonable 0.55%. Renowned stock-picker Mark Rogers and his analyst team at The Motley Fool UK have named 6 shares that they believe UK investors should consider buying NOW.So if you’re looking for more stock ideas to try and best position your portfolio today, then it might be a good day for you. Because we’re offering a full 33% off your first year of membership to our flagship share-tipping service, backed by our ‘no quibbles’ 30-day subscription fee refund guarantee. Simply click below to discover how you can take advantage of this. See all posts by Paul Summers The Greatland Gold share price is up 1,200%! My call was right, so what would I do now? I would like to receive emails from you about product information and offers from The Fool and its business partners. Each of these emails will provide a link to unsubscribe from future emails. More information about how The Fool collects, stores, and handles personal data is available in its Privacy Statement.