- Go to the Adventurer’s Camp right outside of Dragonspine, southeast of Springvale.
- Talk to Iris to obtain the “Investigate the Strange Ice” objective.
- Go to the objective marker and destroy the Scarlet Quartz around it.
- Pick up the Scarlet Quartz and notice how your character now has a red swirl around them.
This probably how you can get to the peak of Dragonspine Mountain in Genshin Impact.
I hope this helped. If I did not answer your question, please inform me!