ᐅ How to install empty conduits for underground cables in a way that is accessible for future inspections and remains unobtrusive?

Hello,
I have installed several Kabuflex 50mm (2 inch) conduits around the house with underground cables inside. Whenever the direction changes, I raised the conduits above ground again, so there are always 2 to 3 conduits sticking out of the ground at certain points. I plan to connect/joint them soon. I was thinking of using unobtrusive stone or wood covers with an access hatch so that they can be reached at any time. I would prefer not to seal the connectors and bury them underground. However, I can imagine that there might be regulations or standards that could restrict this.

For now, I can still access everything, dig if necessary, etc. The actual connection to a sub-distribution box will eventually be done by the electrician, but the sub-distribution box is not installed yet. Therefore, I want to prepare everything in advance but also in a way that the electrician can still check the individual wires if needed.
Some of the cables are 5x2.5mm² (5x0.0039 inch²), which are somewhat rigid. So I would need something larger for this. Does anyone have experience with this or any ideas?

Normally, cable ducts are installed so that the cables are not visible. The connections are made inside these ducts.
Once connected and tested, please seal the connector boxes with resin.
Aquasit remains flexible, making it easy to access.

Okay, thanks for the information. I have now ordered a PVC inspection chamber with a cover. I will install this in a planted bed, and later it should be possible to clamp the pipes and pour in the grout or casting material there.

I have installed Rainbird valve boxes at selected locations throughout the entire property and connected them with at least two DN50 Kubuflex empty conduits. It works perfectly, and there is enough space in the boxes for all the clutter, such as potting junction boxes.