Install empty conduits for underground cables in an inspection-safe and inconspicuous manner?

Hello,
I have laid some Kabuflex 50 empty conduits around the house with earth wires inside them. At every change of direction, I always placed the pipes back upwards, so there are always 2 to 3 empty conduits coming out of the ground at one spot. I want to connect / clamp them together soon. I was thinking of inconspicuous stone/wood replicas with an inspection cover where you can access it at any time. I would rather not seal the clamps and let them disappear into the ground. However, I can also imagine that there might be rules and standards that could possibly restrict this?

I can still reach everywhere, also dig etc. The clamping in a sub-distributor will eventually be done by the electrician, but the sub-distributor is not yet installed. Therefore, I want to prepare everything first but also in a way that the electrician can possibly still check the individual wires.
Some parts have 5x2.5mm cores, which are also a bit stiff. So I would need something bigger for that. Does anyone have experience with this and any ideas?

Normally, cable (pull) ducts are made. Cables are then not visible. Connect inside them. Once connected and tested, please pour resin into the connector boxes. Aquasit remains soft. Thus, easy to access.

okay thanks for the info. I have now ordered a KG revision shaft with a cover. I will install it in a bed and afterwards, the pipes should be able to be clamped and sealed inside it.

I have installed Rainbird valve boxes at selected positions throughout the entire property and connected them with at least 2x DN50 Kubuflex empty conduits. It works wonderfully and there is enough space in the boxes for all the stuff like cast junction boxes.