Basically this snippet introduces us to a thing, and describes it in detail:
A few minutes later we had reached the lodge-gates, a maze of fantastic tracery in wrought iron, with weather-bitten pillars on either side, blotched with lichens, and surmounted by the boars' heads of the Baskervilles.
It is made up of five clauses:
A few minutes later we had reached the lodge-gates, a maze of fantastic tracery in wrought iron, with weather-bitten pillars on either side, blotched with lichens, and surmounted by the boars' heads of the Baskervilles.
But clauses can be broken into smaller word groups.
A few minutes later we had reached the lodge-gates, a maze of fantastic tracery in wrought iron, with weather-bitten pillars on either side, blotched with lichens, and surmounted by the boars' heads of the Baskervilles.
This is snippet is easy to read but contains a lot of subtlety. Let’s see if we can write some variations.